Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.
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Question 751:
As the tadpole develops, the structure labelled 5
Options:
A) grows longer
B) becomes shorter
C) becomes the hind legs
D) remains unchanged
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The correct answer is B .
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Question 752: The crossing of individuals of the same species with different genetic characters is
Options:
A) croos breeding
B) polygenic inheritance
C) non-disjunctin
D) inbreeding
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The correct answer is A .
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Question 753: Th chitin in the exoskeleton of many arthropods is strengthened by
Options:
A) calcium compounds
B) organic salts
C) lipids
D) proteins
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The correct answer is A .
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Question 754: In lizards, the lowering of the gular fold is used to
Options:
A) catch insects
B) attract mates
C) defend their territory
D) frighten enemies
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The correct answer is B .
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Question 755: The hypha of Rhizopus is said to be non septate because it
Options:
A) does not contain chlorophyll
B) has no cross walls
C) is vacuolated
D) stores oil globules
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The correct answer is B .
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Question 756: To facilitate gaseous exchange, breathing roots have
Options:
A) stomata
B) mitochondria
C) cuticle
D) lenticels
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The correct answer is D .
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Question 757: The number of plants species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomea spp (5), sida spp (7) and Imperata spp (23). What is the percentage of occurrence of Imperata spp?
Options:
A) 35%
B) 16%
C) 46%
D) 23%
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The correct answer is C .
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Question 758:
The figure above represents an experiment with two types of soil. The experiment demonstrates
Options:
A) soil attraction of water
B) soil porosity
C) soil capilarity
D) draining capacity of soils
E) soil permeability
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The correct answer is C .
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Question 759: Which of the following has the greatest influence on the distribution of animals in marine and fresh water habitats?
Options:
A) pH
B) Salinity
C) Water current
D) Turbidity
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The correct answer is A .
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Question 760: Plants of temperate origin can be grown in tropical areas in the vegetation zones of the
Options:
A) rain forest
B) guinea savanna
C) sudan savanna
D) montane forest
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The correct answer is B .