The long, cylindrical, highly specialized part of a neuron that conducts nerve impulses away from the cell body is the: MCQ with Answer and Explanation
The long, cylindrical, highly specialized part of a neuron that conducts nerve impulses away from the cell body is the:
A. Dendrite
B. Axon
C. Soma
D. Myelin sheath
Answer: Option B
Solution (By JKExamLibrary)
A neuron consists of a cell body (soma), dendrites, and an axon. Dendrites are short, branched processes that receive impulses and conduct them towards the cell body. The axon is a long, single, cylindrical fiber that conducts nerve impulses away from the cell body to other neurons, muscles, or glands. The myelin sheath is an insulating layer around the axon.
Explanation:
Robert Brown, a Scottish botanist, discovered and named the nucleus in 1831 while studying orchid epidermal cells. Hooke coined 'cell', Schleiden and Schwann formulated cell theory. Brown's observation was pivotal.
Explanation:
Fertilization occurs within the ovule, where the pollen tube delivers two sperm cells. One fuses with the egg to form the zygote, the other with polar nuclei to form endosperm. The stigma receives pollen, style is the path, ovary contains ovules.
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