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Q:

_______ are chlorophyll-bearing, simple, thalloid, autotrophic and largely acquatic (both fresh water and marine) organisms.

A) Pteridophytes B) Bryophytes
C) Algae D) Gymnosperms
 
Answer & Explanation Answer: C) Algae

Explanation:
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Q:

Which process requires cellular energy?

A) Passive transport B) Active transport
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) Active transport

Explanation:

Active transport is a method of transport of ions or molecules along the cell membrane in the cell from lower to higher concentration region and which needs cellular energy.

There are three main types of Active Transport. They are:

  1. The Sodium-Potassium pump,
  2. Exocytosis, and
  3. Endocytosis.
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Q:

Which of the following is a characteristic of all angiosperms?

A) double internal fertilization B) ovules that are not contained within ovaries
C) complete reliance on wind as the pollinating agent D) free-living gametophytes
 
Answer & Explanation Answer: A) double internal fertilization

Explanation:

The flowering plants, also known as angiosperms, Angiospermae or Magnoliophyta, are the most diverse group of land plants. These are also seed producing plants like gymnosperms. In Angiosperms seeds are in flowers.

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Q:

Which of the following is responsible for giving colour to human skin?

A) Luciferin B) Haemoglobin
C) Flavonoids D) Melanin
 
Answer & Explanation Answer: D) Melanin

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Q:

A few organisms can tolerate and thrive in a narrow range of temperatures. Such organisms are called ___________.

A) Osmotic B) Eurythermal
C) Stenothermal D) Hydrothermal
 
Answer & Explanation Answer: C) Stenothermal

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Q:

Which organ produces insulin?

A) Liver B) Thyroid gland
C) Spleen D) Pancreas
 
Answer & Explanation Answer: D) Pancreas

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Q:

Arboreal Ateles is the scientific name of _____ .

A) Squirrel B) Sparrow
C) Lizard D) Spider monkey
 
Answer & Explanation Answer: D) Spider monkey

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Q:

The xylem in plants are responsible for:

A) transport of water B) transport of food
C) transport of amino acids D) transport of oxygen
 
Answer & Explanation Answer: A) transport of water

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