Question # 1

The amount of energy left after plants have met their respiratory needs is net primary production, which shows up as plant:

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Respiration

Photosynthesis

Biomass

Reserve

Regional ecological community of plants & animals primarily determined by climate

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Biome

Niche

Habitat

Both b & c

Pick a non-reducing sugar

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Lactose

Sucrose

Glucose

Fructose

The chief reservoir of nitrogen is the

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Atmosphere

Water

Soil

Rain

Which of the following is not triploblastic

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Cnidaria

Arthropoda

Platyhelminthes

Aschelminthes

A group of interbreeding individuals of same species occurring together in space and time is called:

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Population

Community

Species

Clan

The change in structure of community of an ecosystem during a time period is called

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Succession

Evolution

Mutation

Regression

Degenerated testes are present in abdomen in which of these cases

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Down's syndrome

Klinefelter's sysndrome

Turner's syndrome

Testicular ferminization

In an ecosystem after succession, a new invaders are called

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Pioneers

Predecessors

Climax community

None of these

Example of a virus having tadpole shape consisted of head and tail

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Bacteriophage

Polio virus

HIV

HV

The term originally was coined by the German zoologist Ernst Haeckel in

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1666

1766

1966

1866

Elements required in large amount are called

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Micronutrient

Macronutrient

Organic elements

Inorganic elements

____can be checked by increasing substrate concentration

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Reversible inhibition

Irreversible inhibition

Noncompetitive inhibition

Competitive inhibition

Which of the following is not affected by enzymes

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Nature and properties of end products

Nature and properties of reactants

Speed of biochemical reaction

Efficiency of biochemical reaction

Which of the following is Koshland model

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Active site is rigid

Active site may be molded to précised shape

Position of active site is moveable

None

Which of the following is a messenger of both chemical and nervous coordination

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Acetylcholine

Dopamine

Epinephrine

Serotonin

Phylum of asymmetrical animals is

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Nematoda

Platyhelminthes

Cnidaria

Porifera

Vaccine for___ is under trial administration

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Hep A

Polio

Measles

AIDS

Chlorophyll molecules resemble with which part of hemoglobin?

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Polypeptide chains

Globin part

Non-Protein

All

The animal that is caught and eaten is the

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Predator

Prey

Consumer

Both a and c

The correct sequence in a food chain is

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Mice - green plants - snake - hawke

Green plants - mice - snake - hawk

Mice - snake - green plants - hawk

Green plants - hawk - snake - mice

Similar groups of individuals who can interbreed and produce organisms of their own kind form a:

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population

community

species

succession

The actual location or place where an organism lives is called its:

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Niche

Habitat

Abode

Terrain

A carrier mother for colour blindness does not have

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A normal boy

A carrier boy

A colour blind boy

A normal daughter

The succession started on bare area is called as

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Primary succession

Secondary succession

Tertiary succession

Quartnary succession

Decomposers get their food from

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Soil particles

Dead organic matter

Green plants

Living organisms

The bacteria in the root nodules fix ______ in soil air, converting it to amino acids

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Nitrogen

Phosphorus

Sulphur

Iron

Lices and mosquitoes are the examples of

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Endoparasite

Ectoparasite

Outer parasite

All of above

Urine is preferably used as a vehicle for biotechnology product than:

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Blood

Milk

Plasma

Tissue fluid

Which of the following does not contain peptide bond

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Hemoglobin

Myoglobin

Insulin

Cutin

Viruses are not resistant to

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Interferons

Penicillin

Streptomycin

Any antibiotic

Mycorrhiza is an association of

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Algae with roots of higher plants

Bryophytes with roots of higher plants

Fungi with roots of higher plants

Bacteria with roots of higher plants

Consumers

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Are primarily animals that obtain energy directly or indirectly from producers

Are primarily bacterial organisms that obtain energy directly or indirectly from producers

Are secondary animals that obtain energy directly or indirectly from producers

Are secondary plants that obtain energy directly or indirectly from producers

In sickle cell beta chain glutamic acid is replaced by valine which is sixth amino acid from

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N-Terminal

C-Terminal

R-Terminal

H-Terminal

Give an example of transport across cell membrane using energy

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Endocytosis and exocytosis

Reabsorption of Na+ from ascending loop of Henle

Reabsorption of water from collecting duct

All

Which of the following cannot cross the phospholipid bilayer easily

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Ions

Gas molecules

Ethanol

Steroids

The animals which feed on grasses are called:

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Grassers

Browsers

Grazers

Grazophytes

The succession started after destruction of an area is called as

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Primary succession

Secondary succession

Tertiary succession

Quartnary succession

Predator-prey relationship has a significant influence on:

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Distribution of organisms

Abundance of organisms

Both a & b

Non-availability of organisms

Succinic acid is the ____ of succinic dehydrogenase which undergoes____

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Active site, reduction

Prosthetic group, reduction

Substrate, oxidation

Substrate, reduction

The basic role of an organism in the community is called

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Niche

Factor

Ability

None of above

Which of the following sugar does not form a ring structure in a solution

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Glyceraldehyde

Ribose

Glucose

Fructose

The particles which do not contain any nucleic acid are

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Viruses

Prions

Viroids

All

Traffic of substance between nucleoplasm and cytoplasm is controlled by

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Nuclear Envelope

Nuclear membrane

Nuclear pores

Endoplasmic reticulum

Following enzymes are indicating the specificity of their action in their names, except

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Sucrase

Amylase

Pepsin

Lipase

Genes can be mapped on chromosomes on the basis of

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Sex linkage

Assortment

Recombination frequency

Gene sequencing

Which of the following is not an abiotic component

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Atmosphere

Hydrosphere

Lithosphere

Producers

Both ____ and ____ are detachable cofactors

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Apoenzyme, holoenzyme

Activator, coenzyme

Coenzyme, prosthetic group

Prosthetic group, activator

Mutation may be caused by

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Chemicals

Radiations

Mutagens

All of these

--------------- and --------------- have same number of chromosome

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Man, Chimpanzee

Chimpanzee, Potato

Man, Potato

Potato, Tomato

In coniferous alpine and boreal forests the winter is:

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Longer and little

Shorter and colder

Longer and colder

Shorter and little warmer

By adding _______in neutral pH, we get the optimum pH of pancreatic lipase

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1

2

3

4

In tandra forests the willow tree with an age of 50 year have diameter of trunk only:

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5 cm

7 cm

8 cm

10 cm

The ecosystem consists of two basic interacting components:

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Living and physical

Biotic and abiotic

Living and biotic

Both a & b

The intake of liquid material across the cell membrane is called as

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Phagocytosis

Pinocytosis

Endocytosis

Exocytosis

What is trampling

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Eating grasses to roots

Nipping leaves

Overgrazing

Putting pressure on soil to make it compact

The oxygen concentration in the air is maintained by the green plants which release it during

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Fermentation

Respiration

Photosynthesis

Chemosynthesis

Community structures of an ecosystem is called

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Biosphere

Succession

Progression

Climax community

Which rule depicts its correct statement regarding temperature variation?

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Allen's Rule:

Birds and mammals have greater size in cold region

Bergman's Rule:

The tail snout and ears are smaller in colder region.

Jordan's Rule:

Birds in cold regions are with narrow wings.

All are false.

Virus without envelope is

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HIV

Hepatitis B

Polio virus

Hepatatis C

The succession which occurs in dry soil or rock is

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Hydrosere

Xerosere

Decrosere

All of these

Melanin pigment is produced under the hormone

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ADH

MSH

STH

TSH

Due to the trampling of the soil layer by the hooves of grazing animals the rain water will:

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Penetrate deep into the soil

Not penetrate this soil

Stop on the soil

Do not affect this layer of the soil

Triploblastic, unsegmented, acoelomates exhibiting bilateral symmetry and reproducing both asexually and sexually, with some parasitic forms are included in

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Annelida

Arthropoda

Platyhelminthes

Cnidaria

--------- Develop the basic formwork of plasma membrane:

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Phospholipids

Glycoproteins

Glycolipids

The competitive inhibitor competes with the

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Enzyme

Cofactor

Substrate

Coenzyme

It has duality in its functioning

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Pituitary gland

Pancreas

Gonads

Gut

The abiotic components are also termed as

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Chemical factors

Physical factors

Biological factors

A and B

They are Tumor causing viruses and are usually host specific

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Polio viruses

Retroviruses

Oncoviruses

Both b and c

The cartilaginous fishes contain scales ….

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Placoid

Cycloid

Ganoid

Ctenoid

If non protein part is covalently bonded to the protein part of enzyme, it is known as

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Coenzyme

Prosthetic group

Activator

Cofactor

Primary succession that starts in a pond is called:

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Hydrosere

Derosere

Xerosere

Aquasure

Diseases in living organisms which are caused by parasites are called

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Infestations

Infection

Fusion

All of above

What will be the risk of heamophilia in sons if father is haemophilic and mother is normal

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0%

20%

25%

50%

Bacterial and fungi are mainly included in the group of

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Consumers

Decomposers

Producers

None of these

Anti-Rh antibodies appear in plasma

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During first few months

During last months

Only when stimulated

If Rh⁺individual mistakenly receives Rh^-blood

Essay on "Principles of geology" was published by

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Wallace

Malthus

Lyell

Cuvier

How plants are deprived of nutrients by acid rain

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Due to teaching

Due to fall in pH

Acid creates a barrier to absorption

Unknown cause

Consumers that prey other animals are known as

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Predators

Preys

Parasites

Competitors

The nutrients in aquatic ecosystem tends to be concentrated near the

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Bottom

Surface

Center of total depth

10 feet below the surface