Biology Questions

Q:

An irregular mode of reproduction resulting in the development of an embryo without fertilization is called

1.Parthenogenesis 2.Apogamy 3.Sporophytic budding

Select the correct answer using the code given below.

A) 1 only B) 2 only
C) 2 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: D) 1, 2 and 3

Explanation:

In animals, parthenogenesis means development of an embryo from an unfertilized egg cell. In plants parthenogenesis is a component process of apomixis.Apogamy is a type of reproduction, occurring in some ferns, in which the sporophytedevelops from the gametophyte without fusion of gametes.Adventitious embryony also called sporophytic budding, is a type of apomixis in which an embryo develops directly from nucellus or integument tissue.So, all three are correct.

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Q:

Receptors for hearing are located in the

A) Vestibule B) Tympanic membrane
C) Semicircular canals D) Cochlea
 
Answer & Explanation Answer: D) Cochlea

Explanation:

Receptors_for_hearing_are_located_in_the1537768165.jpg image

Receptors for hearing the organ of corti or the spiral organ is located in the the mammalian cochlea.

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Q:

What process accounts for species diversity?

A) Predation B) Mitosis
C) Symbiosis D) Meiosis
 
Answer & Explanation Answer: D) Meiosis

Explanation:

The process accounts for species diversity is Meiosis. Meiosis is termed as a specialized cell division which reduces chromosomes number by half and then creates for haploid cells.

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Q:

Which among the following hormone can be used as a drug to treat cardiac arrest and some other cardiac problems?

A) Epinephrine B) Insulin
C) Thyroxin D) Calcitonin
 
Answer & Explanation Answer: A) Epinephrine

Explanation:
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Q:

The animals in which the body cavity is absent are known as __________.

A) Coelomates B) Wild
C) Pseudocoelomates D) Acoelomates
 
Answer & Explanation Answer: D) Acoelomates

Explanation:
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Q:

Metastasis is the process by which _________

A) Cell divide rapidly under the influence of drugs B) Cancer cell spread through the blood or lymphatic system to other site or organs
C) The Chromosome in cell nuclei are attached to the soindle before moving to the anaphase poles D) Cancer cells are successfully inhibited to divide any further
 
Answer & Explanation Answer: B) Cancer cell spread through the blood or lymphatic system to other site or organs

Explanation:
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Q:

Deep fried foods are carcinogenic because they are rich in

A) Nicotine B) Hydrocarbons
C) Fats D) All of the above
 
Answer & Explanation Answer: C) Fats

Explanation:

Deep fried foods are carcinogenic because they are rich in fats.

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Q:

Which process occurs inside the chloroplasts?

A) Photosynthesis B) Glycolysis
C) Oxidation D) None of the above
 
Answer & Explanation Answer: A) Photosynthesis

Explanation:

The process that occurs inside the chloroplasts is photosynthesis. The light from the sun is obserbed and combining with water and CO2, plants prepare food for the plants.

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