Which of the following is NOT a type of exoskeleton?
- A. Cartilage
- B. Chitin
- C. Hoot
- D. Nail
- E. Shell
Which of the following enzymes requires acidic medium to function?
- A. Amylase
- B. Erepsin
- C. Maltose
- D. Pepsin
- E. Ptyalin
The following can increase crop production EXCEPT
- A. erosion control
- B. fertilizer application
- C. mechanization
- D. monocropping
- E. pest control
The tricuspid valve is located between the
- A. left auricle and left ventricle
- B. left and right auricles
- C. right and left ventricles
- D. right auricle and right ventricle
- E. right auricle and left ventricle
In terms of evolutionary trend, which of these invertebrates evolved first?
- A. Annelida
- B. Arthropoda
- C. Coelentrata
- D. Platyhelminthes
- E. Protozoa
Which of the following is NOT a type of finger print?
- A. arch
- B. compound
- C. loop
- D. simple
- E. whorl
Cotton is an example of a/an crop.
- A. fibre
- B. food
- C. latex
- D. oil
- E. cereal
Which of the following is NOT a transmissible character?
- A. dimple cheek
- B. ability to roll tongue
- C. colour blindness
- D. sickle-cell anaemia
- E. big muscles of a boxer
The function of the ribosomes is the
- A. absorption of carbon dioxide from the air
- B. control of all the vital activities of the cell
- C. provision of energy for cellular activities
- D. synthesis of secretory products
- E. synthesis of proteins and enzymes
All of these are vertebrates EXCEPT
- A. lizard
- B. rat
- C. starfish
- D. tilapia fish
- E. toad
In which of the following blood vessels does exchange of materials occur
- A. arteries
- B. arterioles
- C. capillaries
- D. venules
- E. veins
An ovary with ovules arranged along its walls is said to have ———— placentation.
- A. axile
- B. central
- C. free central
- D. marginal
- E. parietal
Maximum and minimum thermometer is used for measuring
- A. atmospheric pressure
- B. highest and lowest amount of rainfall in habitat
- C. highest and lowest temperature of the day
- D. light intensity
- E. relative humidity
The enzyme ptyalin acts in the
- A. large intestine
- B. mouth
- C. oesophagus
- D. small intestine
- E. stomach
Which of the following deaminates excess amino acids?
- A. Duodenum
- B. Ileum
- C. Kidney
- D. Liver
- E. Pancreas
Which of the following is NOT an application of variation?
- A. adaptation for survival
- B. blood transfusion
- C. crime detection
- D. determination of paternity
- E. marriage counseling
The fluid in the inner ear is called
- A. aqueous humour
- B. endolymph
- C. lymphocyte
- D. perilymph
- E. vitreous humour
In savanna trees, thick corky bark is an adaption for
- A. absorbing water
- B. conserving water
- C. enhancing transpiration
- D. reducing transpiration
- E. resistance to bush fire
Mycelium is a characteristic feature of
- A. bacteria
- B. hydra
- C. moulds
- D. Mosses
- E. yeasts
Intestinal juice contains the following enzymes EXCEPT
- A. erepsin
- B. lipase
- C. maltase
- D. sucrase
- E. trypsin
Under secretion of thyroxine before maturity cause
- A. cretinism
- B. gigantism
- C. goiter
- D. myxoedema
- E. obesity