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 271: The main structure in vertebrates that supports and protects the body is the
Options:
A) skeleton
B) ligament
C) muscle
D) joint
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The correct answer is A .
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Question 272: A gland in the human body secretes two hormones, one of which causes a disease called diabetes when there is a deficiency. Which of these organ produce the hormone?
Options:
A) spleen
B) Parathyroid
C) Adrenal body
D) Thyroid
E) Pancreas
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The correct answer is E .
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Question 273:

The part labelled II is the
Options:
A) silk thread
B) thorax
C) fore wing
D) anchor
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The correct answer is A .
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Question 274: A relationship between living organisms which is of mutual benefit is
Options:
A) parasitism
B) saprophtism
C) ecosystem
D) symbiosis
E) commensalism
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The correct answer is D .
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Question 275: Which of the following associations is an example of mutualism
Options:
A) hydra viridis and zoochlorellae
B) human and lice
C) shark and remora fish
D) bread and rhizopus stolonifer
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The correct answer is A .
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Question 276: The vascular tissues in higher plants are responsible for
Options:
A) the movement of food and water
B) suction pressure
C) transpiration pull
D) the transport of gases and water
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The correct answer is A .
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Question 277: Leguminous plants, e.g Mucana, are usually planted in cultivated farmlands because they
Options:
A) enrich the soil with phoshates
B) provide animals with food
C) enrich the soil with organic nitrogen
D) protect the soil from being over-heated
E) protect the micro organisms in the soil
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The correct answer is C .
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Question 278: The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called
Options:
A) Amnion
B) Chorion
C) Umbilical cord
D) Oviduct
E) Placenta
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The correct answer is E .
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Question 279:
The part that performs urinogenitalfunction in the male reproductive system is the?
Options:
A) seminal vesacle
B) epididymis
C) urethra
D) ureter
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The correct answer is C .
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Question 280:
The glomerular filtrate contains the following except
Options:
A) Water
B) Urea
C) Blood Corpuscles
D) Glucose
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The correct answer is C .