Biology - Study Mode

[#651] Which one is the biggest part of the brain?
Correct Answer

(D) Cerebrum

Explanation

Solution: The largest part of the brain, the cerebrum has two hemispheres (or halves). The cerebrum controls voluntary movement, speech, intelligence, memory, emotion, and sensory processing.

[#652] The brain is a part of which organ system?
Correct Answer

(C) Nervous System

Explanation

Solution: The nervous system is made up of the central nervous system and the peripheral nervous system: The brain and the spinal cord are the central nervous system. The nerves that go through the whole body make up the peripheral nervous system.

[#653] Asexual reproduction differs from sexual reproduction in that in asexual reproduction, ________
Correct Answer

(A) The new organisms are genetically identical to the parent

Explanation

Solution: Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.

[#654] The genotype of a plant showing a dominant phenotype can be determined by
Correct Answer

(C) Testcross

Explanation

Solution: The zygosity of F 1 generation can be checked by test cross method. In a test cross :
The organism with the dominant trait is always crossed with an organism with the recessive trait. If any offspring show the recessive trait, the unknown genotype is heterozygous. If all the offspring have the dominant trait, the unknown genotype is homozygous dominant. Large numbers of offspring are needed for reliable results.

[#655] Which of the following is not true about colour blindness?
Correct Answer

(C) A colour blind person cannot see any colours

Explanation

Solution: A colour blind person cannot see any colors is not true of colour blindness.