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Q:

Chemical Co- ordination in the body is brought out by

A) Blood B) Lymph
C) Enzymes D) Hormones
 
Answer & Explanation Answer: D) Hormones

Explanation:
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8 3320
Q:

Which of the following statements best describes nutrient density?

A) Consume a variety of foods from MyPyramid's ±ve major food groups every day. B) Consume foods that have the most nutrition for their kcalories
C) Choose a number of diFerent foods within any given food group rather than the same old thing. D) All the above
 
Answer & Explanation Answer: B) Consume foods that have the most nutrition for their kcalories

Explanation:

Consume foods that have the most nutrition for their kcalories describes the Nutrient Density.

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7 3312
Q:

What provides electrons for the light reactions?

A) Water B) Oxygen
C) Carbon dioxide D) Light
 
Answer & Explanation Answer: A) Water

Explanation:

Electrons are stripped from water in the light reactions of photosynthesis. Light provides the energy to excite electrons.

 

ATP and NADPH are both products of the light reactions and are used to power the Calvin cycle.

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6 3309
Q:

Sponges are most accurately described as

A) marine predators B) chemoautrophs
C) filter feeders D) freshwater scavengers
 
Answer & Explanation Answer: C) filter feeders

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3 3307
Q:

Branch of science which deal with the study of causative agent of disease is __________

A) Ecology B) Etiology
C) Eugenics D) Euthenics
 
Answer & Explanation Answer: B) Etiology

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7 3302
Q:

Genes are situated on _________

A) Chromosome B) Mitochondria
C) Plastids D) Ribosomes
 
Answer & Explanation Answer: A) Chromosome

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7 3299
Q:

Branch of biology in which we study about relationship between living and their environment

A) Physiology B) Genetics
C) Ecology D) Geology
 
Answer & Explanation Answer: C) Ecology

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8 3293
Q:

The insects do not have blood pigments because 

A) there is no blood B) blood does not have a respirratory function
C) tissues have pigments D) pigments are elsewhere
 
Answer & Explanation Answer: B) blood does not have a respirratory function

Explanation:

The blood of some invertebrate animals like the earthworm is red due to haemoglobin pigment, but the pigment is dissolved in the plasma. In vertebrates the same pigment is found in the red corpuscles and not in the plasma.

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8 3292