Biology - Study Mode

[#791] According to Erikson, the goal of adolescence is to
Correct Answer

(C) Both a & b

Explanation

Solution: Identity versus confusion is the fifth stage of ego according to psychologist Erik Erikson's theory of psychosocial development. This stage occurs during adolescence between the ages of approximately 12 and 18. During this stage, adolescents explore their independence and develop a sense of self.

[#792] Which one of the following weeds is effective in controlling water pollution caused by industrial effluents?
Correct Answer

(A) Parthenium

Explanation

Solution: Parthenium is effective in controlling water pollution caused by industrial effluents.

[#793] Lichens are the best indicator of
Correct Answer

(A) Air pollution

Explanation

Solution: Lichens are sensitive to atmospheric pollution such as nitrogen (N) because they receive all their nutrients and water from wet and dry atmospheric deposition (fall out).

[#794] Which one of the following processes takes place in lakes during eutrophication?
Correct Answer

(D) Excessive entry of nutrient into water

Explanation

Solution: In lakes, when there's a excess entry of nutrients in water, the growth of plant life takes place. This phenomenon is called Eutrophication.
Thus, the correct answer is (d).

[#795] Which organelles supply energy to the cell?
Correct Answer

(A) Mitochondria

Explanation

Solution: Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).