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 841: A peculiar characteristics of mammals is that they
Options:
A) have teeth
B) are warm-blooded
C) have lungs
D) have sabaceous glands
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The correct answer is D .
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Question 842: I. Parasitism → Sundew. ll. Autotrophism →Amoeba. III. Saprophytism → Alga. IV Heterotrophism → Agama.Which of the above modes of nutrition is correctly matched with the organism that exhibits it?
Options:
A) ll
B) lll
C) lV
D) l
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The correct answer is C .
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Question 843: when the two alleles present in an organism are of the same type, the genotype is described as
Options:
A) heterozygous
B) heterogamous
C) homozygous
D) homologous
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The correct answer is C .
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Question 844:
Which of the following best describes a natural habitat in ecology?
Options:
A) An area where organisms naturally live and interact with their surroundings
B) A human-created environment for wildlife conservation
C) A controlled laboratory setting for ecological experiments
D) A protected area for endangered species
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The correct answer is A .
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Question 845: Which of the following structures is common to Euglena, white blood cell and Amoeba?
Options:
A) Vacuole
B) Cell wall
C) Cilia
D) Cell membrane
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The correct answer is D .
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Question 846:
The only caste in the termite colony whose members can feed themselves are the
Options:
A) workers
B) reproductives
C) soldiers
D) nymphs
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The correct answer is A .
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Question 847:
What is the function of trichocyst in paramecium?
Options:
A) Movement
B) Defence
C) Excretion
D) At which stage in this cycle can man b infected
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The correct answer is B .
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Question 848: The salinity of a brackish enviroment
Options:
A) increases immediately after rain
B) increase at the end of rainy season
C) Decrease with increase in micro-organisms
D) increase during dry season
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The correct answer is D .
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Question 849: Which of the following is an example of carnivorous plant?
Options:
A) hydra
B) bladderwort
C) yeast
D) spirogyra
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The correct answer is B .
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Question 850:

In the diagram, the population size of species II on the 20th day is
Options:
A) 100
B) 200
C) 300
D) 400
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The correct answer is B .