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Online Short Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "
Try The Short Questions For 12th Class Biology Chapter 18 Short Questions Preparation
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Total Questions10
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Available Sets6
Biology - 12th Class Biology Chapter 18 Short Questions Preparation
Question # 1
What is seed dormancy?
- Ans 1: It is special condition of rest, which enables an embryo to survive the long period of unfavorable environmental conditions such as water shortage or low temperature.
12th Class Biology Chapter 18 Short Questions Preparation - Set 1
Question # 1
What is seed dormancy?
- Ans 1: It is special condition of rest, which enables an embryo to survive the long period of unfavorable environmental conditions such as water shortage or low temperature.
12th Class Biology Chapter 18 Short Questions Preparation - Set 2
Question # 1
What is diploid parthenogenesis?
- Ans 1: In diploid partenogenesis a diploid egg is formed due to non disjunction of chromosomes, they retain their diploid number of chromosomes; diploid egg then develops in to young female.
12th Class Biology Chapter 18 Short Questions Preparation - Set 3
Question # 1
Apomixes is a form of parthenogenesis.Discuss
- Ans 1: In apomixes a diploid cell either from the nucellus or megaspore develops into a functional embryo in the absence of a male gamete. The rest of the ovule develops into seed and and ovary into fruit.
- Ans 2: Parthenogenesis: Development of an egg without fertilization
12th Class Biology Chapter 18 Short Questions Preparation - Set 4
Question # 1
Why seed plants are predominantly present all around as?
- Ans 1: Seed plants are very common around us become these plants are have many adaptations to survive on land like protected seeds,flower and fruit formation.Seed dispersal plays an important role in distribution of flowering plants.
12th Class Biology Chapter 18 Short Questions Preparation - Set 5
Question # 1
What is role of progestrone in pregnancy?
- Ans 1: The end or complete stop of menstrual cycle is called menopause. After menopause female can't produce any more ovum or egg & can't give birth to any child.
12th Class Biology Chapter 18 Short Questions Preparation - Set 6
Question # 1
Name various parts of male reproductive system in male.
- Ans 1: Tastes, penis, Vas defference,epididymus
12th Class Biology Chapter 18 Short Questions
Here you can prepare 12th Class Biology Chapter 18 (Reproduction). Click the button for 100% free full practice.
