The movement of plant in response to external stimulus of no particular direction is

A. taxism

B. tropism

C. hyptotropic movement

D. nastic movement

E. phototropism

The part of the mammalian brain responsible for maintaining balance is the

A. medulla oblongata

B. olfactory lobe

C. cerebellum

D. cerebrum

E. frontal lobe

In the onion bulb, food is stored in the

A. stem

B. lateral buds

C. cotyledons

D. outer scale leave

E. leaf base

Groundnut is not really a 'nut' in the biological sense because

A. it is harvested from inside the ground

B. pericarp is not hard and tough

C. the fruit is not as hard as coconut

D. the fruit is not succulent

E. it is an achene

What type of fruit is formed from a single flower having several carpels?

A. Multipe fruit

B. Simple fruit

C. Aggregrate fruit

D. Dehiscent fruit

E. Indehiscent fruit

28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?

A. 22.2

B. 55.6

C. 75.0

D. 25.0

E. 35.7

Which of the following diseases is NOT caused by a virus?

A. Rinderpest

B. Maize rust

C. Newcastle diseases

D. Swine fever

E. Cassava mosaic diseases

A centipede differs from a millipede by its

A. colour

B. numerous abdominal segment

C. paired legs on each abdominal segment

D. poison claws

E. cylindrical body

An organism having one pair of identical genes is

A. a heterozygote

B. a hybride

C. an allelomorph

D. a homozygote

E. a diploid

Plants which can survive in places where the water supply is limited are

A. bryophytes

B. mesophytes

C. xerophytes

D. hydrophytes

E. pteridophytes