The function of the villi in the alimentary canal is to
- A. secrete gastric juice
- B. Curdle milk
- C. emulsify fat
- D. increase the surface area for absorption
The function of the villi in the alimentary canal is to
- A. secrete gastric juice
- B. Curdle milk
- C. emulsify fat
- D. increase the surface area for absorption
The association between two organisms in which one of the organisms gains and the other loses is referred to as
- A. saprophytism
- B. commensalism
- C. mutualism
- D. parasitism
In which of the plant tissues are guard cells located?
- A. Epidemis
- B. MesophyII
- C. Vascular bundles
- D. Meristems
The steps below are involved in the testing of a leaf for starch. Study them carefully and answer the question:
I. Decolorize them
II. Dip decolorized leaf in warm water
III. Place leaf in boiling water
IV. Add iodine solution
The best time to pluck the leaf for the experiment is?
- A. after being exposed to sunlight
- B. three hours after sunset
- C. before sunrise
- D. six hours after sunset
The best time to pluck the leaf for the experiment is
- A. after being exposed to sunlight
- B. three hours after sunset
- C. before sunrise
- D. six hours after sunset
The steps below are involved in the testing of a leaf for starch. Study them carefully and answer the question:
I. Decolorize them
II. Dip decolorized leaf in warm water
III. Place leaf in boiling water
IV. Add iodine solution
The CORRECT order for the test is?
- A. I, II, III and IV
- B. I, III, II and IV
- C. II, III,, I and IV
- D. III, I, II and IV
Which of the following parts of the ear does NOT contain endolymph?
- A. Semi-circular canals
- B. Utriculus
- C. Tympanum
- D. Sacculus
Which of the following actions is NOT a voluntary action?
- A. Stealing
- B. Sneezing
- C. Fighting
- D. Cheating
Which of the following organs is responsible for the production of insulin?
- A. Spleen
- B. Adrenal gland
- C. Thyroid gland
- D. Pancreas
The maintenance of a constant internal environment in an organism is known as
- A. homeostasis
- B. homoiothermy
- C. diuresis
- D. dialysis
The exchange of gases between the environment and the respiratory organs of vertebrates is referred to as
- A. inhalation
- B. respiration
- C. expiration
- D. breathing
The cells and tissues of the nose, throat, chest diaphragm and lungs from the
- A. circulatory system
- B. respiratory
- C. transport system
- D. digestive system
Lateral meristem in flowering plants is found in the
- A. cortex
- B. pericycle
- C. cambium
- D. pith
Which of the following substances is not usually present in the urine of a healthy person?
- A. Urea
- B. Mineral salts
- C. Glucose
- D. Water
Flaccidity in plants is associated with
- A. cessation of photosynthesis
- B. wilting
- C. turgidity
- D. discolouration of leaves