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Q:

Which of the following is an excretory organ of cockroach?

A) Malphigian Tubules B) Nephridia
C) Coxal Gland D) Green Gland
 
Answer & Explanation Answer: A) Malphigian Tubules

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Q:

Molecular clocks are based on the idea that _____.

A) On average neutral mutations arise at a constant rate B) Directional selection occurs at a constant rate
C) Mutations occur once every generation D) Molecules resonate at a certain frequency that can be measured
 
Answer & Explanation Answer: C) Mutations occur once every generation

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Q:

Which is the longest bone in human body?

A) febula B) Tibia
C) Stapes D) Femur
 
Answer & Explanation Answer: D) Femur

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Q:

___________ is a condition in which there is a deficiency of red cells or of haemoglobin in the blood.

A) Albinism B) Propyria
C) Anaemia D) Keloid disorder
 
Answer & Explanation Answer: C) Anaemia

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1 1201
Q:

Control processes depend on which part of the brain

A) hypothalamus B) amygdala
C) cerebellum D) prefrontal cortex
 
Answer & Explanation Answer: D) prefrontal cortex

Explanation:

Control processes depend on the prefrontal cortex which shrinks with age. Inadequate control processes may explain why many older adults have extensive vocabs (measured by written tests) but limited fluency (when they write or talk).

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Q:

Algal bloom results from

A) Global warming B) Salination
C) Eutrophication D) Biomagnification
 
Answer & Explanation Answer: C) Eutrophication

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Q:

Which type of pathogen causes the water­borne disease Cholera?

A) Algal B) Bacterial
C) Protozoan D) Viral
 
Answer & Explanation Answer: B) Bacterial

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Q:

Some of the energy derived from the food we eat is stored in the form of

A) Amino acids B) Pyruvic acid
C) Glucose D) Glycogen
 
Answer & Explanation Answer: D) Glycogen

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