Question # 1

The closing and opening of stomata is directly controlled by

Choose an answer

Wind

Temperature

Water

Light

Parietal cells of linings of human stomach secrete.

Choose an answer

Mucus

Pepsinogen

Gastrin

Hydrochloric acid

Which one of the following is a correct sequence in biological methods

Choose an answer

Observation-hypothesis-law-theory

Observation-hypothesis-deduction-testing of deduction

Hypothesis-observation-deduction-testing of deduction

law-theory-observation-deduction

A kind of headache migraine is treated by.

Choose an answer

Ergotize

Griseofulvin

Lovastatin

Aspergilus

Which of the following were the first plants that formed true leaves and roots.

Choose an answer

Psillopsids

Lycopods

Ferns

Megophylls

The percentage by weight of RNA in a bacterial cells is

Choose an answer

0.25%

3%

5%

6%

Which of the following is a lipid

Choose an answer

Chitin

Rubber

Starch

Sucrose

the light falling on leaf surface is absorbed about.

Choose an answer

1%

25%

50%

100%

Hydra belongs to phylum

Choose an answer

Mollusca

Cridaria

Arthropoda

Annelida

Five kingdom system of classification proposed by Margulis and Schwartz is not based on

Choose an answer

Genetics

Cellular organization

Nucleic acid

Mode of nutrition

The vertebrates in which placenta is formed during the development of foetus are known as

Choose an answer

Pisces

Aves

Mammals

None of these

The loss of water due to ex osmosis from plant cells causes plant to.

Choose an answer

Turgid

Wilt

Rupfure

Seell

A clear picture of the genetic basis of sex determination emerged after the discovery of

Choose an answer

Autosomes

X chromosomes

Sex chromosomes

Y chromosomes

Discharge of egg from the ovary is called.

Choose an answer

Oogenesis

Ovulation

Spermatogenesis

Gametogenesis

In 1917, term Niche was first proposed by American ornithologist named.

Choose an answer

Charles Eltarf

Joseph Grinnell

Lamerck

Ernst Haeckel

Th elateal walls of the chest cavity of man are composed of the:

Choose an answer

Ribs

Intercostals Muscles

Ribs and intercoastal muscles

Ribs ,Intercostals Muscles & diaphragm

In aquatic ecosystem , near shore zone is called.

Choose an answer

Limnetic zone

Littoral zone

Profundal zone

Benthic zone

Part of brain which controls breathing, heart rate and swelling is.

Choose an answer

Cerebrum

Medulla

Mid Brian

Cerebellum

The human egg is swept through the oviduct toward the uterus by:

Choose an answer

The beating of the egg's cilia

Rhythmic contraction of the uterus

Rhythmic contraction of the oviduct

The beating of the cilia in the oviduct

The earth surface covered with water is

Choose an answer

35%

11%

21%

33%

Each A band has a lighter stripe in its mid section called.

Choose an answer

A zone

H zone

M - Line

Z - Line

The existing species are the modified descendants of pre-existing ones according to:

Choose an answer

Theory of special creation

Theory of organic evolution

Uniformitarianism

Theory of catatrophe

More Classes

Other Links

Biology Life Science Test Medium Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer