In which of the following vertebrates does the skin function as a respiratory surface
- A. rat
- B. lizard
- C. fish
- D. frog
The excretory structure in the earthworm is the
- A. malphighian tubule
- B. flame cell
- C. nephridium
- D. kidney
Use the diagram to answer the question
The neural arch is labelled
- A. i
- B. ii
- C. iii
- D. iv
Use the diagram to answer the question
The vertebra illustrated is
- A. lumber
- B. thoracic
- C. caudal
- D. cervical
Which of the following waste products in plants is excreted through the stomata and lenticles?
- A. carbon dioxide
- B. alkaloids
- C. tannins
- D. anthoocyanins
The process by which a red blood cell placed in distilled water absorbs water until it burst and realease it’s content into the surrounding is known as
- A. osmosis
- B. plasmolysis
- C. turgidity
- D. hemolysis
The smallest living organism which share the characteristics of both living and non-living matter are
- A. bacteria
- B. fungi
- C. viruses
- D. protozoa
Which of the following instruments is NOT used in measuring abiotic factors in any habitat?
- A. microscope
- B. thermometer
- C. hygrometer
- D. windvane
What is the term used to describe biotic and abiotic factors in the environment of the organism?
- A. habitat
- B. biome
- C. ecosystem
- D. ecological niche
The bright colours of the comb and feathers in the peacock are for?
- A. sex differentiation
- B. beauty
- C. courtship
- D. defence
The butterfly is of great economic importance because
- A. of it's use in scientific studies
- B. it sucks nectar from flowers
- C. it adds to the beauty of the environment
- D. it pollinates flowers of crops and other plants
The villus in the small intestine is significant because
- A. Increases the surface area for absorption
- B. increases the surface area for digestion
- C. assists in mixing digested food
- D. assists in filtering undigested food
In which of the following does external fertilization take place?
- A. toad
- B. lizard
- C. bird
- D. cockroach
The function of ribosome in cells is
- A. protein synthesis
- B. starch synthesis
- C. transport of material
- D. lipid storage
The hypha of rhizopus is said to be non-septate because it
- A. does not contain chloropyll
- B. has no cross wall
- C. is vacuoled
- D. stores oil globus
Epiphytes growing on the branches of trees provide an example of the relationship known as?
- A. parasitism
- B. commensalism
- C. saprophytism
- D. holophytism
In an agricultural ecosystem, the biotic component consist of
- A. crops, pests and beneficial insects
- B. crops, temperature and humidity
- C. pests, beneficial insects and water
- D. crops, water and soil
The hormone which regulates the amount of glucose in the blood is called?
- A. Adrenalin
- B. Auxin
- C. Insulin
- D. Thyroxine