Question

question 19
which are parts of a seed?
o polar nuclei, sperm, egg
o stigma, style, ovary
o endosperm, embryo, seed coat
o tube, generative nucleus, pollen grain

Explanation:

• Analyze Option 1: Polar nuclei, sperm, and egg are involved in double fertilization (forming endosperm and zygote) but are not seed parts.
• Analyze Option 2: Stigma, style, and ovary are parts of the flower’s pistil (involved in pollination/fertilization), not the seed.
• Analyze Option 3: A typical seed consists of the seed coat (protection), embryo (future plant), and endosperm (nutrient storage), so this matches.
• Analyze Option 4: Tube (pollen tube), generative nucleus, and pollen grain are part of the male gametophyte (pollination), not the seed.

Answer:

C. endosperm, embryo, seed coat