Which of the following is the common to the mosquito, housefly and blackfly?
- A. they undergo complete metamorphosis
- B. they are parasites of man
- C. their immature stages are aquatic
- D. their adults have two pairs of wings
The process of shedding the exoskeleton of an arthropod is known as
- A. metamorphosis
- B. instar formation
- C. ecdysis
- D. tagmosis
The chromosomes of members of the kingdom Monera are within the
- A. nucleoplasm
- B. cytoplasm
- C. nucleus
- D. nucleolus
A water medium is necessary for fertilization in
- A. fungi
- B. conifers
- C. ferns
- D. angiosperms
Which of the following has the most primitive respiratory system?
- A. snail
- B. fish
- C. insect
- D. mouse
Which of the following uses diffusion as the principal method of gaseous exchange?
- A. lizard
- B. grasshopper
- C. rat
- D. earthworm
The waste product of plants used in the conversion of hide to leather is
- A. gum
- B. alkaloid
- C. tannin
- D. resin
The correct sequence of the movement of urea during urine formation is
- A. glomerulus → Bowman's capsule→ Convoluted tubules → Henle's loop → collecting tube
- B. glomerulus → Bowman''s capsule→ Convoluted tubules → Henle's loop → convoluted tubule→ collecting tubule
- C. convoluted tubules → glomerulus → Henle's loop→ Bowman's capsule →collecting tubules
- D. convoluted tubule → Bowman's capsule → Henle's loop →glomerulus → collecting tubule
Pineapple is an example of
- A. a dehiscent fruit
- B. an aggregate fruit
- C. a composite fruit
- D. a simple fruit
The pancreas secretes enzymes for the digestion of
- A. fats, proteins and carbohydrates
- B. fats, vitamins and cellulose
- C. fats, carbohydrates and vitamins
- D. protein, cellulos and minerals
Stunted growth and poor root development are a result of a deficiency in
- A. sulpur
- B. phosphorus
- C. calcium
- D. iron
The opening and closing of the stoma are regulated by
- A. transpiration
- B. respiration
- C. diffusion
- D. osmosis
Monocot stem differ from dicot stems in that monocot have
- A. no cambium
- B. no pith
- C. fewer vascular bundles
- D. phloems with parenchyma
The photosynthetic pigments include
- A. chlorophyll and carotenoids
- B. chloroplasts and cytochromes
- C. melanin and haemoglobin
- D. carotenoids and haemoglobin
In mammals, the organ directly on top of the kidney is the
- A. thyroid gland
- B. adrenal grand
- C. pancreas
- D. prostate gland
Example of a fish that aestivates is
- A. shark
- B. croaker
- C. lung fish
- D. cat fish
In lizards, the lowering of the gular fold is used to?
- A. catch insects
- B. attract mates
- C. defend their territory
- D. frighten enemies
The theory which supports the view that the large muscles developed by an athlete will be passed on to the offspring was proposed by
- A. Lamarck
- B. Darwin
- C. Mendel
- D. Pasteur
Which of the following factors can bring about competition in population?
- A. dispersion
- B. emigration
- C. drought
- D. mortality
In which of the following Nigeria states can mountain vegetation be found?
- A. Taraba
- B. Enugu
- C. Bauchi
- D. Plateau
A biotic factor which affects the distribution and abundance of organisms in a terrestrial habitat is
- A. temperature
- B. competition
- C. pH
- D. light