Which of the following statements is false?

A. Human sense of smell is easily fatigued

B. The skin can perceive the sensations of touch, pain, pressure and temperature

C. Taste buds and olfactory cells are active when wet as well as when dry

D. Sensory nerve endings receive stimuli and send to the central nervous system

E. Senses of smell and taste can be weakened by catarrh or blocked nose.

The following are directly involved in transmission of sound waves to the brain except

A. eardrum

B. auditory meatus

C. auditory ossicles

D. eustachian tube

E. cochlea

The term syncarpous is used to describe a flower when the carpels are

A. many and fused

B. two only

C. two and separate

D. many and free

E. lying at different parts of a flower

Which of the following structures are characteristics of insect pollinated flowers?

A. Dull coloured flowers with no nectar

B. Very light numerous and pendulous stamen

C. Brightly coloured petals, scent nectar

D. Flowers are usually small and inconspicuous

E. Stigma are large, feathery and hang outside the flower

Which of the following statements is not correct?

A. Shortage of food may be caused by pestilence, rinderpest and neglect of farming

B. Shortage of food may lead to competition, emigration, death and decline in the rate of reproduction

C. Over-crowding may lead to scarcity of food

D. Dispersal of seeds and fruits prevents overcrowding

E. Territorial defence encourages food scarcity in a habitat

Which of the following is an advantage of dispersal of fruits and seeds? It allows

A. fair distribution of source of food for animals

B. growth in close association with parent plant

C. even distribution of plants and reduction of intraspecific competition

D. keen competition for food

E. the seeds to evolve new species

The series of changes that occur in a seed by which the embryo develops into a seedling is known as

A. fertilization

B. gametogenesis

C. pollination

D. germination

E. regeneration

Which of the following organisms has a symbiotic relationship with green algae?

A. Amoeba

B. Paramecium

C. Hydra

D. Euglena

E. Chlamydomonas

At the end of photosynthesis, the green leaf is tested for starch and not glucose, because

A. the glucose is used up immediately to provide energy for the needs of the leaf

B. the glucose formed is immediately converted to starch

C. starch is stored only in leaves

D. there are no chemicals for glucose test in leaves

E. it is easy to test for starch

Which of these processes removes carbon from the atmosphere?

A. Putrefaction of animals

B. Burning of fuels

C. Photosynthesis

D. Volcanic eruption

E. Respiration in plants