Question Detail

Among the biotic components of the ecosystem, the producer system is ?

Sea
Rivers
Green Plants
Animals

Answer: Option C

1. Plants absorb dissolved nitrates from soil and convert them into :

Free nitrogen
Urea
Proteins
Ammonia

Answer: Option A

2. Myopia is connected with ?

ears
lungs
eyes
None of these

Answer: Option C

3. White blood corpuscles are used by our body ?

to carry oxygen
to dissolve protiens
to combat infection
to help liver work

Answer: Option C

4. Study of factors connected with the improvement of human race ?

Evolution
Embryology
Euthenics
Eugenics

Answer: Option D

Explanation:

Evolution - Study of origin of life and formation of new species.

Embryology - Study of fertilization of egg, formation of zygote and development of embryo.

Euthenics - Study of environmental conditions contributing to improvement of human beings.

5. Eggs is not a source of ?

Fats
Vitamin C
Vitamin D
Protein

Answer: Option B