Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?
- A. the cells of their epidermis have no blood capillaries
- B. they have well developed respiratory structures
- C. their cylindrical shape gives high surface area to volume ratio
- D. their surface area to volume ratio is very low
The movement of sugars from the leaf to other parts of plant is?
- A. guttation
- B. transpiration
- C. transportation
- D. translocation
An example of arboreal animal is?
- A. squirrels
- B. duck
- C. pig
- D. rat
The internal structure of a leaf that has larger air space is?
- A. palisade mesophyll
- B. epidermis
- C. spongy mesophyll
- D. vascular bundles
A universal recipient of blood belongs to blood group?
- A. O
- B. AB
- C. B
- D. A
Lack of nucleus is a feature in?
- A. osteocyte
- B. neurone
- C. erythrocyte
- D. leucocyte
The development of big muscles by a wrestler is an example of?
- A. acquired characteristics
- B. inherited characteristics
- C. mutation
- D. atrophication
The components of blood in man are?
- A. red blood cells, white blood cells, plasma and water
- B. red blood cells, white blood cells, and plasma
- C. red blood cells, white blood cells, and platelets
- D. red blood cells, white blood cells, plasma and platelets
The part that performs urinogenital function in the male reproductive system is the?
- A. seminal vesacle
- B. epididymis
- C. urethra
- D. ureter
The type of fruit that is formed from a single flower having several free carpels is?
- A. indehiscent fruit
- B. aggregate fruit
- C. simple fruit
- D. fleshy fruit
The feeding relationship that exists between a tick and a cow is?
- A. parasitism
- B. mechanism
- C. saprophytism
- D. commensalism
The part of mammalian skin that excretes metabolic wastes is?
- A. sweat gland
- B. horny layer
- C. Malpighian layer
- D. sebaceous gland
Which of the following is associated with the dark stage of photosynthesis?
- A. Assimilation of Carbon(IV)oxide
- B. Photophosphorylation
- C. Photolysis
- D. Excitation of chlorophyll
In Nigeria, Southern Guinea Savanna is found in?
- A. Borno and Sokoto
- B. Kogi and Kwara
- C. Kaduna and Cross River
- D. Kano and Niger
Succession that occurs on an abandoned farm land is?
- A. tertiary
- B. secondary
- C. primary
- D. climax
The waste product of insects is?
- A. uric acid
- B. urine
- C. Mucilage
- D. sweat
During mitosis, the stage at which chromosomes lines up around the equator is?
- A. telophase
- B. metasphase
- C. anaphase
- D. prophase
The movement of Euglena towards the source of light is a?
- A. tropic movement
- B. tactic movement
- C. nastic movement
- D. kinetic movement
An adaptation for defense in animals is?
- A. croaking of a male toad
- B. basking in lizard
- C. spines in porcupine fish
- D. huddling together of penguins
The body of a snail is divided into head?
- A. thorax and abdomen
- B. visceral mass and abdomen
- C. thorax and foot
- D. visceral mass and foot
sources of air pollutants are?
- A. industrial chimneys, burning fossil oils and river dams
- B. sulphurdioxide, acid rain and pesticides
- C. sulphur dioxide, vehicle exhausts, and aerosols
- D. sewage,smoke and old vehicles