Which of the following gases is mainly responsible for the greenhouse effect? MCQ with Answer and Explanation

Explanation:
CNS = brain + spinal cord. The peripheral nervous system (PNS) includes cranial and spinal nerves. The autonomic nervous system controls involuntary functions.

Explanation:
Mutations are random changes in DNA sequence that create new alleles, serving as the ultimate source of genetic variation. Natural selection, genetic drift, and gene flow act on existing variation but do not create new alleles. Mutations can be beneficial, neutral, or deleterious, and are essential for evolution.

Explanation:
Monotropa (Indian pipe) is a saprophytic angiosperm that obtains nutrition from dead organic matter through mycorrhizal association. Cuscuta is a parasitic plant (dodder), Drosera (sundew) and pitcher plant are insectivorous plants. Saprophytes lack chlorophyll and are heterotrophic. Monotropa belongs to the family Ericaceae. Saprophytism is uncommon in angiosperms.