The organism is found in soils rich in
- A. mud
- B. humus
- C. clay
- D. sand
In the diagram, the structure labelled II is the
- A. spermathecal pore
- B. cocoon
- C. clitellum
- D. chaetea
The behavioural adaptation in social insects could best be described as
- A. symbiosis
- B. saprophytism
- C. parasitism
- D. commensalisms
The special pigment for colour change in chameleon is
- A. melanin
- B. carotenoid
- C. chromatin
- D. chromatophore
Which of the following structure is adapted for feeding in a bird of prey?
- A. Hooked break and sharp claws
- B. Smooth beak and strong claws
- C. Big beaks and strong feet
- D. Pointed beak and strong claws
One of adaptation of Cactus opuntia to conserve water is the reduction of
- A. internodes
- B. stem to leaves
- C. leaves to spine
- D. flower size
Physiological adaptation to very dry conditions in animals demonstrates
- A. rejuvenation
- B. xeromorphism
- C. hibernation
- D. aestivation
The clumping together of red blood cells is
- A. agglutination
- B. fussion
- C. transfusion
- D. compatibility
To which blood group do universal recipients belong?
- A. B
- B. A
- C. O
- D. AB
Which of the following is caused by Treponema palladium?
- A. Gonorrhea
- B. Leprosy
- C. Tuberculosis
- D. Syphilis
The solid part of the ecosystem is referred to as the
- A. atmosphere
- B. hydrosphere
- C. biosphere
- D. lithosphere
A tropical disease caused by Trypanosoma is
- A. sleeping sickness
- B. river blindness
- C. yellow fever
- D. malaria
A pollutant that is biodegradable is
- A. crude oil
- B. heavy metals
- C. cellophane
- D. sewage
The eye defect cause by the development of cloudy areas in the lenses is?
- A. presbyopia
- B. glaucoma
- C. cataract
- D. astigmatism
Oestrogen is a hormone that is synthesized in the
- A. ovaries
- B. testes
- C. anterior pituitary
- D. adrenal cortex
The absence of anti-diuretic hormone in humans results in
- A. decreasing dehydration
- B. drastic dehydration
- C. eliminating dehydration
- D. increasing dehydration
The sensory cell that responds to dim light is referred to as the
- A. cone
- B. lens
- C. rod
- D. iris
The most important plant hormone is
- A. cytokinin
- B. abscisic acid
- C. auxin
- D. gibberellin
The gland that is found just below the hypothalamus is the
- A. parathyroid
- B. adrenal
- C. pituitary
- D. thyroid
The male reproductive organ of a flower is the
- A. carpel
- B. stamen
- C. petal
- D. sepal
The transfer of pollen grains from the anther to a sigma is
- A. propagation
- B. placentation
- C. pollination
- D. fertilization