The carrier of the hereditary character in plants and animal is the
- A. Cell
- B. Nucleus
- C. Chromosome
- D. Chloroplast
- E. Gene
A secchi disc is used in the determination of
- A. Rainfall
- B. Tides
- C. Waves
- D. Turbidity
- E. Current velocity
The complex relationship between the members of a community and between the community as a whole and its physical environment is
- A. Ecosystem
- B. Habitat
- C. Environment
- D. Niche
- E. Micro habitat
Which of the structure listed below is peculiar to the axis vertebra?
- A. Odontoid process
- B. Anterior zygapophysis
- C. Posterior zygapophysis
- D. Lateral spine
- E. Centrum
The movement of molecules from a region of higher concentration to one of lower concentration is
- A. Diffusion
- B. Transpiration
- C. Osmosis
- D. Translocation
- E. Plasmolysis
Which of the substance listed below is a trace element of plants?
- A. Potassium
- B. Sodium
- C. Copper
- D. Phosphate
- E. Nitrate
An organism which lives on the remain of dead plant is
- A. An endoparasite
- B. Saprophyte
- C. Commensal
- D. Symbiont
- E. ectoparasite
Which of these is the terminal portion of the alimentary canal of a mammal?
- A. Oesophagus
- B. Stomach
- C. Rectum
- D. Colon
- E. Appendix
Which of these tissue serves the function of support and water conduction
- A. Parenchyma
- B. Collenchymas
- C. Sclerenchyma
- D. Xylem
- E. Phloem
Amoeba moves by means of
- A. Cilia
- B. Flagella
- C. Pseudopodia
- D. Swimmerets
- E. Setae
All living organism
- A. Photosynthesize
- B. Respire
- C. Move
- D. Feed
- E. Transpire
In a breeding program a cross was made between two true breeding cow-pea types: one with round seeds and the other with wrinkled seed. If roundness is dominant why wrinkleness is recessive, in the first filial generation all the seeds produced will be
- A. 25% wrinkled, 75% round
- B. 100% wrinkled
- C. 50% wrinkled, 50% round
- D. 75% wrinkled, 25% round
- E. 100% round
Which of these products obtained from analyzing sweat from skin is not an excretory product?
- A. water
- B. Salts
- C. Dust
- D. Urea
- E. Urates
A germinating seed requires oxygen which is essential for
- A. converting carbonhydrate into glucose
- B. Transporting energy from part of the plant to another
- C. The production of energy by oxidising essential carbonhydrate
- D. hydrolysis of protein
- E. The formation of water molecules within the germinating seed
Which of these is not a characteristics of a wind pollinated flowers?
- A. A smaller quantities of sticky pollen produce
- B. Feathery styles of stigmas pendulously hang outrside the flower
- C. small inconspicuous scentless flower
- D. large anthers which are loosley attached to the filament
- E. Light pollen grains produced in large quantities from the anthers
In a photo-tropic experiment, young seedlings in a box were subjected to light from one direction. The seedling continue to grow erect. Which of the following statement is correct
- A. Only the tip of the seedling received the light
- B. The light was not strong enough
- C. The seedlings were rather too young
- D. The tip of the seedling may have been covered
- E. The box containing the seedling should have been placed on a laboratory bench
A carbohydrate molecule in the blood in the right ventricles of the heart is pumped into the cell of the toe of a man. Which of these structure is it unlikely to pass through en-route
- A. pulmonary artery
- B. lungs
- C. Heart
- D. liver
- E. aorta
A farmer X working in a swamp did not eat any food nor drink any water. Which of this diseases can he not contact
- A. Cholera
- B. Bilharzia
- C. River blindness
- D. Malaria
- E. Sleeping sickness
A spirogyra cell placed was placed in solution X after 1 minute the cell has been plasmolysed, solution X was
- A. Tap water
- B. a very strong sugar solution
- C. a weak sugar solution
- D. a very weak salt solution
- E. distilled water
The mammalian stomach can carry out a number of processes except
- A. absorption of glucose
- B. secretion of hydrochloric acid
- C. secretion gastric juice
- D. churning of food
- E. production of trypsin
a potometer was used to compare the rate of loss of the same volume of water from a plant under different environmental conditions as under a fan, at the sea shore, under the sun, in the airy laboratory and in cupboard. What time was likely to have been obtained in a cupboard?
- A. 15 secs
- B. 30secs
- C. 25secs
- D. 20secs
- E. 28secs