(i) Which of the following is common to both plants and animals?
Respiration
Digestion
An excretory system
Chloroplasts
Starch grains
Choose Answer :
(ii) A flower which possesses both stamens and carpels is said to be
Unisexual
Hermaphrodite
Monoecious
Zygomorphic
Polymorphic
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(iii) Useful substances are retained in the kidney by
Filtration
Osmosis
Selective reabsorption
Osmo-regulation
Diffusion
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(iv) The Monera are also referred to as Prokaryotes. This means having:
No nucleus
Membrane bounded organelles
Simple structures
Reduced nucleus
Circular nucleus
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(v) Which of the following is a characteristic of wind-pollinated flowers?
They have large brightly coloured petals
They produce a small number of pollen grains
They have small anthers situated inside the flowers
They do not have nectarines
They have large, sticky or spiky pollen grains
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(vi) Food is moved along the oesophagus by a process known as:
Assimilation
Chewing
Egestion
Peristalsis
Churning
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(vii) Reptiles differ from birds because:
Reptiles do not lay eggs while birds do
Reptiles have a backbone while birds do not
Reptiles have scales while birds do not
Reptiles are cold blooded while birds are warm blooded
Reptiles have moist skin while birds have dry skin
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(viii) Removal of predators in the ecosystem will result in:
Decrease in the number of producers
Increase in the number of producers
Decrease in the number of prey
An increase in the number of decomposers
No significant change
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(ix) A bean plant can either bear terminal or axial flowers. When a terminal flowered plant (T) is pollinated with an axial flowered plant (t), the offspring produced were 200 terminal flowered and 210 axial flowered. Which of the following represents the genotypes of the parents?
TT x Tt
Tt x Tt
TT x tt
Tt x tt
T x t
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(x) What does selective breeding mean?
Only pure stock should be inbred
The parents are chosen to produce desired offspring