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 261: The best explanation for the theories of natural selection is that
Options:
A) all organisms have equal capacity for survival in their habitats
B) organisms have varying capacities for survival in their habitats
C) organisms compete for resource and better competitors survive and thrive
D) habitats allow only organisms that will not have to compete for survival
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The correct answer is C .
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Question 262: The part of the cell solely responsible for respiration is the
Options:
A) nucleus
B) nucleolus
C) mitochondria
D) golgi apparatus
E) endoplasmic reticulum
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The correct answer is C .
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Question 263: when protein are broken down they also provide
Options:
A) oxygen
B) carbonhydrate
C) energy
D) amino-acid
E) carbon dioxide
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The correct answer is D .
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Question 264: interveinal chlorosis is normally associated with the deficiency of
Options:
A) magnesium
B) potassium
C) iron
D) calcium
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The correct answer is A .
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Question 265: A severe and long dry season is a characteristic feature of
Options:
A) Sahel Savanna
B) Mangrove Swamps
C) Sudan Savanna
D) Guinea Savanna
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The correct answer is A .
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Question 266: Growth can best be determined in a population of Spirogyra by measuring the
Options:
A) total length of the filament
B) total widths of the filaments
C) rate of photosynthesis in the population
D) dry weights of the organism
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The correct answer is A .
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Question 267:
Ecological succession refers to
Options:
A) The movement of organisms from one habitat to another
B) The competition among species for limited resources
C) The process of natural selection in a population
D) The gradual and predictable change in a community over time
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The correct answer is D .
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Question 268: The caste of termites that lacks pigmentation is the
Options:
A) King
B) worker
C) soldier
D) queen
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The correct answer is B .
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Question 269: if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be
Options:
A) lowest in the tube with clay
B) the same in all tubes
C) lowest in the tube with loamy soil
D) highest in the tube with sandy soil
E) lowest in the tube with sandy soil
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The correct answer is E .
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Question 270: The theory which supports the view that the large muscles developed by an athlete will be passed on to the offspring was proposed by
Options:
A) lamarck
B) darwin
C) mendel
D) pasteur
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The correct answer is A .