Question # 1

A dominant plant of temperate deciduous forests is the :

Choose an answer

Euphorbia

Taxus baccata

cactus

Acacia

Parapodia are organs of locomotion in ……

Choose an answer

Leech

Planaria

Earthworm

Neries

Which of the following nitrogenous base have methyl group

Choose an answer

Adenine

Guanine

Uracil

Thymine

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

Choose an answer

Population

Community

Species

Clan

The compound formed by the combination of a base and a pentose sugar is called:

Choose an answer

Nucleoside

Nucleic acid

Nucleotide

Nuclein

Phylum of asymmetrical animals is

Choose an answer

Nematoda

Platyhelminthes

Cnidaria

Porifera

A biotic components includes the components like:

Choose an answer

Air, water, and animals

Air, soil and plants

Air, water and soil,

air, soil, and, animals

Which of the following cross is carried to check the genotype of an individual showing a dominant phenotype

Choose an answer

Check cross

Test Cross

Criss cross

Self cross

Animals devoid of respiratory, excretory and circulatory organs are

Choose an answer

Tapeworms

Sponges

Earthworm

Live fluke

Which of the following is true about mesoglea

Choose an answer

Acellular

Mesodermal

Cellular

Multicellular

Rh factor or antigen was first studied in :

Choose an answer

Man

Owl

Monkey

Fish

It is not a steroid hormone

Choose an answer

Epinephrine

Estrogen

Progesterone

17 β hydoxy Testosterone

Several bacteria in soil are able to oxidize ammonia or ammonium ions, this oxidation is known as:

Choose an answer

Ammonification

Nitrification

Denitrification

Amino-oxidation

Motor neurons are

Choose an answer

Multipolar

Bipolar

Unipolar

Tripolar

Phosphorylation of glucose molecule in glycolysis is carried out by

Choose an answer

ATPase

Kinase

Isomerase

Transferase

What is cause of Eutrophication

Choose an answer

Excreta

Phosphate

Nitrates

All

The amount of energy left after plant have met their respiratory need is net primary production called as

Choose an answer

Mass

Gross production

Biomass

None

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

Choose an answer

Penetrate deep into the soil

Not penetrate this soil

Stop on the soil

Do not affect this layer of the soil

Bacterial live and get food from roots of plants is an example of

Choose an answer

Symbiosis

Mutualism

Parasitism

Infestation

Limnetic phytoplanktons include:

Choose an answer

Mossses

Algea

Bacteria

Cyanobacteria

The establishment of woody plants that inhibits the growth of most plants other than mosses in succession is known as

Choose an answer

Climax stage

Shrub stage

Tree stage

All of these

The process by which the limited amount of nitrogen is circulated and recirculated throughout the world of living organisms is known as the

Choose an answer

Nitrogen cycle

Nitrogen path way

Nitrogen depletion

None of above

An animal that preys other animals is a

Choose an answer

Predator

Carnivore

Consumer

All

Eukaryotic ribosomes are composed of an almost equal amount of _____ and proteins

Choose an answer

DNA

RNA

Carbohydrates

Lipids

The gill pouches present in embryos of mammals :

Choose an answer

support that ontogeny recapitulates phylogeny

homologous structures

used by embryos to breathe

evidence for the degeneration

Root Nodules are the example of

Choose an answer

Predation

Symbiosis

Parasitism

None of above

In each case succession begins with few hard invaders called:

Choose an answer

Producers

Consumers

Pioneers

Beginners

Water changes its temperature:

Choose an answer

Faster than air

Same as air

Slower than air

Sometime slower and sometimes faster

Community structures of an ecosystem is called

Choose an answer

Biosphere

Succession

Progression

Climax community

Regulation of hunger and menstrual cycle is controlled by

Choose an answer

Cerebrum

Thalamus

Hypothalamus

Pons

Darwin published " The Origin of Species" in

Choose an answer

1840

1844

1858

1859

Which of the following is not triploblastic

Choose an answer

Cnidaria

Arthropoda

Platyhelminthes

Aschelminthes

Parasites which live inside the host body is called:

Choose an answer

Ectoparasite

Endoparasite

Intestinal parasite

Muscular parasite

Degenerated testes are present in abdomen in which of these cases

Choose an answer

Down's syndrome

Klinefelter's sysndrome

Turner's syndrome

Testicular ferminization

The dominance relations of a 4 O'clock plant can be described in terms of

Choose an answer

Complete dominance

Incomplete dominance

Partial dominance

Both B and C

Abiotic factors include:

Choose an answer

Geomagnetism

Gravity

Water

All these

Archaeobacteria could tolerate temperatures up to :

Choose an answer

140°C

120°C

95°C

70°C

Which enzyme deficiency leads to phenylketonuria

Choose an answer

Phenylalanine oxidase

Phenylalanine hydroxylase

Phenylalanine synthase

Phenylalanine carboxylase

High calcium concentration in blood causes the stimulation of

Choose an answer

Parathormone

Calcitonin

T₃

T₄

X and Y linked genes are also called as

Choose an answer

Sex genes

Dominant genes

Autosomal genes

Pseudoautosomal genes

Tiny shaped structure located deep between cerebral hemispheres

Choose an answer

Thyroid gland

Pitutary gland

Pineal Gland

Corpus callosum

The inhibitor having structural similarity with substrate is

Choose an answer

Irreversible inhibitor

Reversible inhibitor

Competitive inhibitor

Noncompetitive inhibitor

Primary consumers form ______ trophic level

Choose an answer

First

Second

Third

Forth

Homogenetistic acid is oxidized rapidly when exposed to air, turning the urine

Choose an answer

White

Purple

Blue

Black

Wallace developed a Theory of Natural Selection similar to that of

Choose an answer

Lamarck

Linnaeus

Darwin

Lyell

Mycorrhiza is an association between the roots of plants growing in acid soil and certain

Choose an answer

Virus

Fungi

Bacteria

Nematods

Tundra ecosystem is a vast treeless region bordering the:

Choose an answer

Pacific ocean

Atlantic ocean

Arctic ocean

Arabian sea

The root nodules bacteria fix ______ in sil air:

Choose an answer

Parasitism

Carbon dioxide

Nitrogen

Hydrogen

On an average, there are 50 or more thylakoids piled to form one

Choose an answer

Intergranum

Crista

Granum

F_{_1}particle

The next to simplest amino acid is

Choose an answer

Alanine

Glycine

Serine

Glutamine

Food web is the group of various

Choose an answer

Food substances

Food chains

Trophic levels

All of these

Ornithology is the sudy of

Choose an answer

Mammals

Reptiles

Insects

Birds

Pick out the phospholipid from the following

Choose an answer

Phosphatidylserine

Lecithin

Phosphatidylcholine

All

--------------- begins forged from bare rocks, sand for where no previous life was found

Choose an answer

Secondary succession

Primary succession

Succession

Climax period

Charles Darwin was born in Shrewsbury, in Western England in

Choose an answer

1854

1807

1809

1866