Which of the following organs produces bile?
- A. Gall bladder
- B. Pancreas
- C. Spleen
- D. Liver
- E. Stomach
Human beings require vitamins in their diet because vitamins
- A. contain carbohydrates and fats
- B. prevent kwashiorkor
- C. stimulate the alimentary canal
- D. digest proteins in the body
- E. influence many important chemical processes in the body
Milk can be pasteurized by
- A. the addition of common salt
- B. boiling for one hour
- C. heating to 75oc for 20 minutes
- D. the addition of vinegar
- E. heating to 100oc for 12 hours
Some of the features of an animal are scales, teeth, nares and backbone. The animal is likely to be a
- A. Toad
- B. Bird
- C. Lizard
- D. Rat
- E. Bat
Which one of the following animals is NEVER a secondary host of tapeworms?
- A. cow
- B. Fish
- C. Pig
- D. Man
- E. Dog
The vacuole of a plant cell is
- A. a large empty space
- B. smaller than that of animal cell
- C. filled with air
- D. an ordinary vacuum
- E. surrounded by a membrane
Which of the following spreads malaria in Nigeria?
- A. Anopheles mosquito
- B. Culex mosquito
- C. Aedes mosquito
- D. Tsetse fly
- E. House fly
One of the following statement is NOT true of spirogyra
- A. it is a simple multicellular plant
- B. during conjugation, its gametes, which are structurally and physiologically similar, fuses to form a zygote
- C. it possesses spiral chloroplast which enables the plant to photosynthesize
- D. its cells are protected externally by layer of mucilage
- E. there are pyrenoids along the chloroplast
In Mucor or Rhizopus carbohydrate is absorb in the form of
- A. starch
- B. sucrose
- C. glucose
- D. glycogen
- E. arabinose
One significant difference between roots and stem is that
- A. Branch roots originate in the pericycle while stem do not
- B. Stems are always bove the ground while root are always below the ground
- C. Stems are positively geotropic while roots are negatively geotropic
- D. Stem are sometime used for storage while roots are never used
- E. Stems grow in both length and circumference while root grow only in length
Magnesium is utilized in the formation of
- A. ATP
- B. Glucose
- C. Amino acids
- D. Chlorophyll
- E. Fats
The element nitrogen is utilized in
- A. Formation of ATP
- B. Formation of glucose
- C. Formation of amino acid
- D. Photosynthesis
- E. None of the above
Root hair have their origin from
- A. Endodermis
- B. Pericycle
- C. Cortex
- D. Epidermis
- E. Xylem
Insect show consideration powers of water conservation. This is due to the fact that
- A. The chitinous cuticle is impregnated with tanned protein
- B. Nitrogenous waste is eliminated as urea
- C. Chitin is impermeable to water
- D. The malpighian tubules are impermeable to water
- E. The curticle is covered with wax
Which of these is not true? grass in the above food chain
- A. trap all the sunlight
- B. trap a small percent of the sun energy
- C. are primary producers
- D. are eaten by primary consumers
- E. contains chlorophyll
Grasses grasshopper lizard snakes hawks. In the food chain, the organism which are the least in number are
- A. grasses
- B. grasshopper
- C. lizards
- D. snakes
- E. hawks
The major function of contractile vacuole in amoeba is?
- A. to secrete enzyme to digest food particles
- B. to store excess food materials
- C. to excrete nitrogenous waste
- D. to absorb water from the surrounding
- E. to collect and expel water in the cytoplasm
The one-seeded fuit in which the pericarp and the seed coat have become fused together is known as
- A. achene
- B. samara
- C. caryopsis
- D. legume
- E. drupe
Identical twins are produced under one of the following conditions
- A. Two oval fertilized at the same time by two sperm
- B. one ovum ferilized divides to give two embryos
- C. one ovum fertilized, twins formed shortly before birth
- D. Two ova fertilized by one sperm
- E. one ovum fertilized by two sperm
The maize grain is regarded as a fruit and not a seed because
- A. It is covered by a sheath of leaves
- B. The testa and fruit wall fuse after fertilization
- C. It has both endosperm and cotyledon
- D. It has coleorhiza and coleoptile
- E. The pericarp and seed coat are separated
The blood vessel which carries digested food from the small intestine to the liver is the
- A. Renal vain
- B. Renal artery
- C. Hepatic artery
- D. Hepatic portal vein
- E. Coelic artery