The two nuclei contained in the germinating pollen grain are
- A. egg and palisade
- B. generative and sperm
- C. generative and tube
- D. spongy and tube
- E. tube and cellular
Meiosis involves all the following EXCEPT
- A. exchange of genes
- B. production of cells with diploid number of chromosomes
- C. production of cells with haploid number of chromosomes
- D. production of two daughter cells
- E. two nuclear divisions
The structure that separates the thoracic from abdominal cavity is
- A. diaphragm
- B. intercostal muscle
- C. rib
- D. sternum
- E. thoraxic vertebrae
The main constituents of glomerular filterate are
- A. blood and water
- B. blood and urea
- C. glucose and water
- D. salt and blood
- E. water and urea
Which of these is an example of physiological variation?
- A. Blood group
- B. Eye colour
- C. Fingerprint
- D. Height
- E. Weight
Intercostal muscles are found in the —— region
- A. abdominal
- B. chest
- C. head
- D. limb
- E. neck
Spider belongs to which of the following classes in the phylum arthropoda?
- A. Arachnida
- B. Chilopoda
- C. Crustacean
- D. Insect
- E. Myriapoda
The group of organisms at the base of the pyramid of numbers are
- A. decomposers
- B. primary consumers
- C. producers
- D. secondary consumers
- E. tertiary consumers
The type of association in which one organism benefits and the other neither benefits nor is harmed is called
- A. commensalism
- B. mutualism
- C. parasitism
- D. saprophytism
- E. symbiosis
Amoeba engulfs food particles by means of its
- A. contractile vacuole
- B. cytoplasmic membrane
- C. food vacuoles
- D. nucleus
- E. pseudopodia.
Amoeba engulfs food particles by means of its
- A. contractile vacuole
- B. cytoplasmic membrane
- C. food vacuoles
- D. nucleus
- E. pseudopodia.
Which of the following is a biotic factor that affects population?
- A. Predator
- B. Salinity
- C. Space
- D. Temperature
- E. Water
The following are types of finger prints EXCEPT
- A. arch
- B. compound
- C. loop
- D. simple
- E. whorl
The developing embryo is attached to the mother’s uterus by
- A. amnion
- B. blood vessels
- C. placenta
- D. umbilical cord
- E. uterine cavity
A situation in which the African king fish encases itself in a cocoon, mud and mucus until the next rainy season is called
- A. adaptation
- B. aestivation
- C. diapause
- D. dormancy
- E. hibernation
A woman removed a hot aluminium pot with her bare hand and suddenly throws it down. What type of action has taken place?
- A. Conditional
- B. Instinctive
- C. Involuntary
- D. Learned
- E. Voluntary
Which of the following is NOT found in animal cell?
- A. Chloroplast
- B. Endoplasmic reticulum
- C. Golgi apparatus
- D. Mitochondria
- E. Nucleus
The following are associated with succession EXCEPT
- A. changes in species composition
- B. competition among organisms
- C. decrease in number of organisms
- D. diversity of organisms
- E. habitat change
The following are involved in reflex action EXCEPT
- A. brain cells
- B. intermediate neuron
- C. motor neuron
- D. receptor
- E. sensory neuron
The following are kidney diseases EXCEPT
- A. diuresis
- B. Hepatitis
- C. kidney stones
- D. nephritis
- E. oedema.
The dental formula i 3/3, c 1/1, pm 4/4, m 2/3 represents that of a
- A. Cat
- B. Dog
- C. Man
- D. Rabbit
- E. Sheep