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 221: Mycorriza is an associationn between fungi and
Options:
A) protozoans
B) Roots of higher plants
C) Bacteria
D) Filamentous algae
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The correct answer is B .
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Question 222:
Which of the following is a nitrifying bacterium?
Options:
A) Rhizobium
B) Nictrobacter
C) Azotobacter
D) Pseudomonas
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The correct answer is B .
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Question 223: The beak of a duck is structurally adapted for
Options:
A) scooping and sieving food
B) catching and grasping food
C) picking and cracking food
D) boring and sucking food
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The correct answer is A .
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Question 224: The mutation theory of organic evolution was propounded by
Options:
A) Gregor Mendel
B) Hugo de Vries
C) Jean Lamarck
D) Charles Darwin
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The correct answer is B .
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Question 225: The common thing in plant and animal cell is
Options:
A) chloroplast
B) cell wall
C) nucleus
D) centrioles
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The correct answer is C .
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Question 226: The organelle common to both plant and animal cells is the
Options:
A) centrioles
B) plasmalemma
C) cell wall
D) chloroplast
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The correct answer is B .
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Question 227: The sequence of the one-way gaseous exchange mechanism in a fish is
Options:
A) gills ⇢ operculum ⇢ mouth
B) mouth ⇢ gills ⇢ operculum
C) mouth ⇢ operculum ⇢ gills
D) operculum ⇢ mouth ⇢ gills
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The correct answer is B .
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Question 228:
The appendicular skeleton is made up of the
Options:
A) limbs
B) skull and limbs
C) phalanges
D) ulna and radius
E) girdles and limbs
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The correct answer is E .
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Question 229: The plantain reproduces asexually by
Options:
A) suckers
B) buds
C) fragments
D) spores
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The correct answer is A .
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Question 230: The group of insects that undergoes complete metamorphosis is
Options:
A) houseflies, beetles and cockroaches
B) cockroaches, grasshoppers and bees
C) houseflies, beetles and butterflies
D) aphids, grasshopper and butterflies
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The correct answer is C .