A change in the amount of yolk and its distribution in the egg will affect:

1. formation of zygote

2. pattern of cleavage

3. number of blastomeres produced

4. fertilization

When breast feeding is replaced by less nutritive food low in proteins and calories, infants below the age of one year are likely to suffer from:

1. marasmus

2. rickets

3. kwashiorkor

4. pellagra

Stroma in the chloroplasts of higher plants contains:

1. light-independent reaction enzymes

2. light-dependent reaction enzymes

3. ribosomes

4. chlorophyll

Which of the following correctly describes the location of some body parts in the earthworm Pheretima?

Foetal ejection reflex in human female is induced by:

1. pressure exerted by aminotic fluid

2. release of oxytocin from pituitary

3. fully developed foetus and placenta

4. differentiation of mammary glands

Which one of the following has haplontic life cycle?

1. Funaria

2. Polytrichum

3. Ustilago

4. wheat

Which of the following plants you would select for the production of bioethanol?

1. Brassica

2. Zea mays

3. Pongamia

4. jatropha

Which part of the human brain is concerned with the regulation of body temperature?

1. Medulla oblongata

2. Cerebellum

3. Cerebrum

4. Hypothalamus

Which one of the following is the correct pairing of a body part and the kind of muscle tissue that moves it?

1. Heart wall- Involuntary unstriated muscle

2. Biceps of the upper arm- Smooth muscle fibers

3. Abdominal wall- Smooth muscle

4. Iris- Involuntary smooth muscle

In the case of peppered moth (Biston betularia), the black-coloured form became dominant over the light-coloured form in England during the industrial revolution. This is an example of: