A change in the environment of an organism is termed

A. sensitivity

B. impulse

C. response

D. stimulus

Organisms that interbreed to produce fertile offspring belong to the same

A. class

B. family

C. species

D. order

The transfer of ripe pollen grains from the anther to the stigma of the same flower is termed

A. fertilization

B. self-pollination

C. reproduction

D. conjugation

The hereditary material in a living organism is located inside the

A. protein wall

B. cytoplasm

C. nucleus

D. lysosome

Respiration is an essential life process providing the living cells with

A. oxygen

B. sugars

C. energy

D. carbon dioxide

The organelle involved in the transport of substances within a cell is

A. Golgi body

B. endoplasmic reticulum

C. ribosome

D. mitochondrion

Which of the following processes takes place when a plant cell is put in a hypotonic solution?

A. Water moves into the cell and the cell bursts

B. Water leaves the cell and the cell becomes flabby

C. Water moves into the cell and the cell becomes turgid

D. The cell becomes plasmolysed

The dominant stage in the life cycle of a fern is the

A. antheridium

B. gametophyte

C. prothallus

D. sporophyte

Yeast is added to the dough during the preparation of bread because it produces

A. ethanol

B. heat

C. carbon dioxide

D. carbohydrate

Growth includes the following processes except

A. differentiation

B. enlargement

C. mitosis

D. meiosis

Which of the following processes is a form of sexual reproduction?

A. Budding by yeast cells

B. Conjugation in Spirogyra

C. Binary fission in Amoeba

D. Rhizome production by ginger

The fine adjustment of the light microscope is used to

A. admit more light into the microscope

B. focus the object under low power

C. focus the object under high power

D. raise the stage upwards