Finf the Fsc part 2 online preparation for biology chapter 19 (Growth and Development)

Online Short Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 19 Short Questions Preparation

Question # 1

What is cleavage?

Ans 1: Immidiately after fertilization, egg undergoes a series of mitotic division called cleavage.

Question # 2

What are intercalary meristems?Give their role.

Ans 1: These are the parts of apical meristem which get separated from apex by permanent issues.They play important role in the production of leaves and flowers.

Question # 3

Differentiate between primary organizer and primary induction.

Ans 1: Primary organizer: The area of the dorsal lip which induces the development of secondary embryo in the host is called primary organizer.
Ans 2: Primary induction: The ability of the primary organizer to induce the growth of secondary embryo in host is called primary induction

Question # 4

Differentiate between apical meristem and lateral meristem.

Ans 1: Apical meristem:Apical meristem found at the tips of shoot and root.The cells of apical meristem has ability to divide throughout plant life,These are basically related to extension of plant body.
Ans 2: Lateral meristem:Lateral meristem are cylinder of dividing cells. They are present in dicots and gymnosperms. Vascular cambium and cork cambium are example of lateral meristem. They increase the diameter of root and stem.

Question # 5

Name two layers of lateral plates of mesoderm.

Ans 1: The lateral plate of mesoderm splits into two layers named as somatic mesoderm and splanchnic mesoderm.

Question # 6

Name the phase of plants growth.

Ans 1: Phases of plants growth are:
i) Phase of cell division ii) Phase of elongation iii) Phase of maturation iv) Phase of differention.

Question # 7

Define Gerontology.

Ans 1: Gerontology is the study of aging. It also deals with the causes of aging and measures by which aging can be slowed.

Question # 8

Write practical application of apical dominance.

Ans 1: It can be used to produce smooth woody stem.
It is also used to increase the storage life of potato from 1 to 3 years.

Question # 9

What are neoblasts and their role? Or What are neoblasts?

Ans 1: Neablasts are unspecialized cells which are always present in the body of adult and are mobilized to the site of ampuation,where they are differentiated into specialized cells.

Question # 10

Define Growth correlations.

Ans 1: Development of plant is usually correlated with its growth and different organs grow at different rates in different directions and the development of different parts takes place.This is called growth correlation.

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Prepare Complete Set Wise Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

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12th Class Biology Chapter 19 Short Questions Preparation - Set 1

Question # 1

What is cleavage?

Ans 1: Immidiately after fertilization, egg undergoes a series of mitotic division called cleavage.

Question # 2

What are intercalary meristems?Give their role.

Ans 1: These are the parts of apical meristem which get separated from apex by permanent issues.They play important role in the production of leaves and flowers.

Question # 3

Differentiate between primary organizer and primary induction.

Ans 1: Primary organizer: The area of the dorsal lip which induces the development of secondary embryo in the host is called primary organizer.
Ans 2: Primary induction: The ability of the primary organizer to induce the growth of secondary embryo in host is called primary induction

Question # 4

Differentiate between apical meristem and lateral meristem.

Ans 1: Apical meristem:Apical meristem found at the tips of shoot and root.The cells of apical meristem has ability to divide throughout plant life,These are basically related to extension of plant body.
Ans 2: Lateral meristem:Lateral meristem are cylinder of dividing cells. They are present in dicots and gymnosperms. Vascular cambium and cork cambium are example of lateral meristem. They increase the diameter of root and stem.

Question # 5

Name two layers of lateral plates of mesoderm.

Ans 1: The lateral plate of mesoderm splits into two layers named as somatic mesoderm and splanchnic mesoderm.

Question # 6

Name the phase of plants growth.

Ans 1: Phases of plants growth are:
i) Phase of cell division ii) Phase of elongation iii) Phase of maturation iv) Phase of differention.

Question # 7

Define Gerontology.

Ans 1: Gerontology is the study of aging. It also deals with the causes of aging and measures by which aging can be slowed.

Question # 8

Write practical application of apical dominance.

Ans 1: It can be used to produce smooth woody stem.
It is also used to increase the storage life of potato from 1 to 3 years.

Question # 9

What are neoblasts and their role? Or What are neoblasts?

Ans 1: Neablasts are unspecialized cells which are always present in the body of adult and are mobilized to the site of ampuation,where they are differentiated into specialized cells.

Question # 10

Define Growth correlations.

Ans 1: Development of plant is usually correlated with its growth and different organs grow at different rates in different directions and the development of different parts takes place.This is called growth correlation.

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12th Class Biology Chapter 19 Short Questions Preparation - Set 2

Question # 1

Explain embryonic induction.

Ans 1: Capacity of some cells to induce a specific developmental response in other cells is wide spread phenomena,this is called embryonic induction.

Question # 2

What role is played by clear cytoplasm and yellow cytoplasm in animal development?

Ans 1: Clear cytoplasm produces larval epidermis and yellow cytoplasm produces muscle cells.

Question # 3

What are teratogens? Give an example.

Ans 1: Anything which interferes with the normal process of development is the factor causing abnormalities and are known as teratogens.
For Example:Radiation,Maternal infections,Chemicals and drugs.

Question # 4

Define teratology and teratogens.

Ans 1: Study of abnormal development is called teratology. Factors causing abnormal development are called teratogens.

Question # 5

Define blastocoel and neurocoel.

Ans 1: At blastula stage there is a segmentation cavity formed called blastocoel which is formed by the separation of cell.
Ans 2: With the formation of neural tube,there is the formation of CNS and a cavity enclosed is known as neurocoel.

Question # 6

Write practical application of apical dominance.

Ans 1: It can be used to produce smooth woody stem.
It is also used to increase the storage life of potato from 1 to 3 years.

Question # 7

Write about cleavage and discoidal cleavage.

Ans 1: The series of mitotic divisions after fertilization of egg is called cleavage.Process of cell division is confined to the small disc of protoplasm laying on the surface of yolk at animal pole.This type of cleavage is called discoidal cleavage.

Question # 8

What is compensatory effect?

Ans 1: The removal of apex from the apical tip release the lateral buds from the apical dominance,it is called compensatory effect.

Question # 9

What are the internal factors which affect the process of growth?

Ans 1: internal factors which are involved in plant growth are hormones,water ,nutrition,vitamins.

Question # 10

Differentiate between neurula and neurocoel.

Ans 1: Neurula: In the embryo of 24 hrs the neural folds are clearly visible,at this stage embryo is called neurula.
Ans 2: Neurocoel: In the chick development with the formation of neural tube,there is formation of central nervous system and the cavity enclosed is called neurocoel.

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12th Class Biology Chapter 19 Short Questions Preparation - Set 3

Question # 1

Define Gerontology.

Ans 1: Gerontology is the study of aging. It also deals with the causes of aging and measures by which aging can be slowed.

Question # 2

What are teratogens? Give an example.

Ans 1: Anything which interferes with the normal process of development is the factor causing abnormalities and are known as teratogens.
For Example:Radiation,Maternal infections,Chemicals and drugs.

Question # 3

What is compensatory effect?

Ans 1: The removal of apex from the apical tip release the lateral buds from the apical dominance,it is called compensatory effect.

Question # 4

Define Regeneration.Give one example.

Ans 1: The ability to regain or recover the lost part or injured part of the body is called regeneration.For Example if lobster loses its pincer claw a new claw regenerates.

Question # 5

What are apical meristems?

Ans 1: These are the cells which are capable of cell division and are involved in the primary growth of plants.

Question # 6

Differentiate between neurula and neurocoel.

Ans 1: Neurula: In the embryo of 24 hrs the neural folds are clearly visible,at this stage embryo is called neurula.
Ans 2: Neurocoel: In the chick development with the formation of neural tube,there is formation of central nervous system and the cavity enclosed is called neurocoel.

Question # 7

Differentiate maturation from differentiation.

Ans 1: Maturation:During maturation,the final size of a given type of a cell is attained.The cells which develop into pith,cortex and certain other tissues do not elongate further.
Ans 2: Differentiation:When the cell enlargement ceases,the process of differentiation starts.Wall of cells become pitted,thickening appear on the walls of xylem vessels etc.

Question # 8

Give the effect of temperature on plant growth.

Ans 1: Normal rate of growth increases with rise of temperature and decrease with decrease in temperature. For maximum growth the optimum temperature is 25 to 30^oC and it is least at 5-10^oC. But at very high temperature 35 to 40^oC the rate of growth stops and plant may dies.

Question # 9

Differentiate between gerontology and teratology.

Ans 1: Gerontology: Study of aging is called gerontology.
Ans 2: Teratology:Teratology is the branch of biology,which deals with abnormal developments and their causes.

Question # 10

What is growth? Mentions its types.

Ans 1: Increase in size of an organism is called growth. It has two types
Ans 2: 1) open growth 2) Closed growth.

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12th Class Biology Chapter 19 Short Questions Preparation - Set 4

Question # 1

What is open growth? Discuss.

Ans 1: Plants have growth pattern called open growth which means throughout life plants add new organs such as branches,leaves and roots, enlarging from the tip of roots and shoots.

Question # 2

How do quantity and quality of light effect plant growth?

Ans 1: Light plays important role in the growth of plants:
Quality of light: The red light favors elongation of cells and blue light enhances cell division but retards cell enlargement. Similarly ultraviolet rays also retard cell elongation.
Quantity of light:Duration of light affects the growth vegetative & reproductive structures. It also plays a role in inducing or suppressing flowering. The phenomenon is termed as photoperiodism.

Question # 3

Differentiate between primary growth and secondary growth in plant.

Ans 1: Primary growth: occur due to the activity of apical meristem which results increase in length or height of plant.
Ans 2: Secondary growth: Of plants occur due to activity of cambium and it results increase in girth of plant.

Question # 4

What is primitive streak?

Ans 1: In the chick the mesodermal cells do not invaginate but migrate medially and caudally from both sides and create a mid line thickening called primitive streak.

Question # 5

Write practical application of apical dominance.

Ans 1: It can be used to produce smooth woody stem.
It is also used to increase the storage life of potato from 1 to 3 years.

Question # 6

Differentiate between primary organizer and primary induction.

Ans 1: Primary organizer: The area of the dorsal lip which induces the development of secondary embryo in the host is called primary organizer.
Ans 2: Primary induction: The ability of the primary organizer to induce the growth of secondary embryo in host is called primary induction

Question # 7

What is blastoderm?

Ans 1: The discoidal cap of cells above the blastocoel is called blastoderm.

Question # 8

What is growth? Mentions its types.

Ans 1: Increase in size of an organism is called growth. It has two types
Ans 2: 1) open growth 2) Closed growth.

Question # 9

Differentiate between apical meristem and lateral meristem.

Ans 1: Apical meristem:Apical meristem found at the tips of shoot and root.The cells of apical meristem has ability to divide throughout plant life,These are basically related to extension of plant body.
Ans 2: Lateral meristem:Lateral meristem are cylinder of dividing cells. They are present in dicots and gymnosperms. Vascular cambium and cork cambium are example of lateral meristem. They increase the diameter of root and stem.

Question # 10

What is morula?

Ans 1: After fertilization of egg it divides repeatedly by mitotic division resulting in a ball of cells called morula

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12th Class Biology Chapter 19 Short Questions

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Fsc part 2 online preparation for biology chapter 19 (Growth and Development)

Online Short Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

Biology - 12th Class Biology Chapter 19 Short Questions Preparation

What is cleavage?

What are intercalary meristems?Give their role.

Differentiate between primary organizer and primary induction.

Differentiate between apical meristem and lateral meristem.

Name two layers of lateral plates of mesoderm.

Name the phase of plants growth.

Define Gerontology.

Write practical application of apical dominance.

What are neoblasts and their role? Or What are neoblasts?

Define Growth correlations.

Prepare Complete Set Wise Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

12th Class Biology Chapter 19 Short Questions Preparation - Set 1

What is cleavage?

What are intercalary meristems?Give their role.

Differentiate between primary organizer and primary induction.

Differentiate between apical meristem and lateral meristem.

Name two layers of lateral plates of mesoderm.

Name the phase of plants growth.

Define Gerontology.

Write practical application of apical dominance.

What are neoblasts and their role? Or What are neoblasts?

Define Growth correlations.

12th Class Biology Chapter 19 Short Questions Preparation - Set 2

Explain embryonic induction.

What role is played by clear cytoplasm and yellow cytoplasm in animal development?

What are teratogens? Give an example.

Define teratology and teratogens.

Define blastocoel and neurocoel.

Write practical application of apical dominance.

Write about cleavage and discoidal cleavage.

What is compensatory effect?

What are the internal factors which affect the process of growth?

Differentiate between neurula and neurocoel.

12th Class Biology Chapter 19 Short Questions Preparation - Set 3

Define Gerontology.

What are teratogens? Give an example.

What is compensatory effect?

Define Regeneration.Give one example.

What are apical meristems?

Differentiate between neurula and neurocoel.

Differentiate maturation from differentiation.

Give the effect of temperature on plant growth.

Differentiate between gerontology and teratology.

What is growth? Mentions its types.

12th Class Biology Chapter 19 Short Questions Preparation - Set 4

What is open growth? Discuss.

How do quantity and quality of light effect plant growth?

Differentiate between primary growth and secondary growth in plant.

What is primitive streak?

Write practical application of apical dominance.

Differentiate between primary organizer and primary induction.

What is blastoderm?

What is growth? Mentions its types.

Differentiate between apical meristem and lateral meristem.

What is morula?

12th Class Biology Chapter 19 Short Questions

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