The lowest level of organization in living organisms is

A. organ

B. cell

C. system

D. tissue

Which of the following is the most complex according to their cellular level of organization?

A. Heart

B. Hair

C. Euglena

D. Hydra

Which of the following organisms is multicellular?

A. Chlamydomonas

B. Spirogyra

C. Amoeba

D. Euglena

In bryophytes, sex organs are produced in the

A. protonema

B. sporophyte

C. gametophyte

D. rhizoid

Seed plants are the most dominant vegetation on land because of

A. their motile gamates

B. their ability to photosynthesize

C. efficient seed dispersal

D. availability of water

Which of the following is an aboreal organism?

A. Elephant

B. Fish

C. Antelope

D. Bird

I2/1, c0/0, pm3/2, m3/3. The general formula above represent that of

A. an omnivore

B. a detritus feeder

C. a carnivore

D. a herbivore

A circulatory system is very essential in mammals but not in smaller organisms like Amoeba because

A. Amoeba lives in freshwater

B. Diffusion is sufficient to transport materials in Amoeba

C. Amoeba lacks blood containing haemoglobin

D. Amoeba exibits anaerobic respiration

In vascular plants, the sieve tubes and companion cells are present in the

A. cambium

B. cortex

C. xylem

D. phloem

The stomata of leaves are similar in function to the

A. pharynx of humans

B. scales of fish

C. spiracle of insects

D. trachea of toads