Multiple Choice
Which of the following is a function of saliva in the human digestive system?
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1. Introduction to Biology
Introduction to Biology
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Which of the following structures is NOT a part of the sporophyte generation in plants?
A
Leaf
B
Pollen grain
C
Root
D
Stem
Verified step by step guidance1
Understand the concept of alternation of generations in plants: Plants have two distinct life stages, the sporophyte generation (diploid) and the gametophyte generation (haploid). The sporophyte produces spores through meiosis, while the gametophyte produces gametes through mitosis.
Identify the structures associated with the sporophyte generation: The sporophyte generation includes structures such as leaves, stems, and roots, which are all part of the diploid plant body.
Clarify the role of the pollen grain: The pollen grain is part of the gametophyte generation, as it is a haploid structure that develops from spores and is responsible for producing male gametes (sperm cells).
Compare the given options: Leaf, root, and stem are all parts of the sporophyte generation, while the pollen grain is part of the gametophyte generation.
Conclude that the pollen grain is NOT a part of the sporophyte generation, as it belongs to the gametophyte generation instead.
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