Which of the following groups consists of heterotrophs?
- A. Mucor, chlamydomonas and Euglena
- B. Spirogyra, Mucor and Mushroom
- C. Man, Mucor and Mushroom
- D. Man, Maize and Cowpea
Which of the following organisms is a producer?
- A. Spirogyra
- B. Mucor
- C. Rhizopus
- D. Yeast
The abiotic factor which determines the depth to which light penetrates in a pond is
- A. current
- B. turbidity
- C. wind
- D. salinity
All the available places on earth which support life constitute the
- A. lithosphere
- B. atmosphere
- C. biosphere
- D. hydrosphere
Mammals require a relatively high amount of carbohydrates because
- A. they maintain the weight of the body
- B. they are required for growth
- C. they initiate enzyme production
- D. they yield energy for activities.
Which of the following food substances turns bright red when warmed with suddan III solution?
- A. Starch
- B. Reducing sugar
- C. Protein
- D. Fat
A balanced meal for an adult person may consist of
- A. two pieces of chicken, four balls of bean cake, two eggs and two cups of tea with milk
- B. four slices of bread, one bowl of pap, two oranges and two bananas
- C. four slices of yam and stew, two pieces of beef, one cup of tea with milk and two oranges
- D. a plate of beans, two pieces of meat, two eggs, one cup of tea with milk and two oranges
Vitamin E is concerned with
- A. bone formation
- B. reproduction
- C. normal growth
- D. formation of red blood cells.
Which of the following statements about phosphorous is not correct?
- A. Helps to regulate the acid-base balance of the body
- B. Regulates the metabolism of proteins, fats and carbohydrates
- C. Required in many chemical reactions occurring in the body
- D. Phosphorous is a major constituent of bones and teeth
Members of the vitamin B complex are
- A. water-soluble
- B. fat-soluble
- C. water insoluble
- D. generally insoluble
Vitamin C deficiency results in
- A. ricket
- B. beri-beri
- C. scurvy
- D. pellagra
Vitamin C which is water soluble is
- A. cabalamine
- B. pyridoxine
- C. ascorbic acid
- D. riboflavine
A very poor growth in plants and discolouration of leaves signifies the deficiency of
- A. calcium
- B. magnesium
- C. potassium
- D. manganese
Which of the following statements about nitrogen is not correct? Nitrogen is needed for
- A. protein synthesis
- B. activating certain enzymes
- C. the synthesis of chlorophyll
- D. healthy vegetative growth of plants
The first stable product of photosynthesis is
- A. starch
- B. glucose
- C. oxygen
- D. water
Which of the following groups consists of only micro-nutrients?
- A. Molybdenum, sulphur and copper
- B. Boron, Zinc and Calcium
- C. Manganese, molybdenum and zinc
- D. Magnesium, phosphorus and manganese.
Which of the following is not a dry indehiscent fruit?
- A. Legume
- B. Cypsela
- C. Samara
- D. Caryopsis
What happens to an ovule of a flower, after fertilization? It
- A. becomes a fruit
- B. withers away
- C. becomes a seed
- D. forms the cotyledons
Which of the following parts of the eye is sensitive to light?
- A. Retina
- B. Cornea
- C. Choroid layer
- D. Optic nerves
The simplest form of nervous pathway which links receptors with effectors is known as the
- A. relay neuron
- B. reflex arc
- C. motor nerves
- D. sensory nerves
Each neurone consists of the following structures’ except
- A. cell body
- B. dendrites
- C. axon
- D. white matter