Which structure provides protection from disease, insects and water for the seed?

Which structure provides protection from disease, insects and water for the seed?

• A. Seed coat
• B. Embryo
• C. Endosperm
• D. Pollen grain

Answer: (A)

Seeds need a sturdy shield to survive until conditions are right for germination. The seed coat, or testa, forms the outer protective layer around the seed. It comes from the ovule’s outer tissues and becomes a tough barrier that helps guard against physical damage, infections by pathogens, insects, and excessive water loss or uptake. This protection keeps the embryo and stored nutrients safe as the seed sits in soil or other environments. The embryo is the young plant inside that will grow when the seed germinates, the endosperm stores food for the developing plant, and the pollen grain is the male cell that fertilizes the ovule—neither provides the protective outer shell for the seed.

Seeds need a sturdy shield to survive until conditions are right for germination. The seed coat, or testa, forms the outer protective layer around the seed. It comes from the ovule’s outer tissues and becomes a tough barrier that helps guard against physical damage, infections by pathogens, insects, and excessive water loss or uptake. This protection keeps the embryo and stored nutrients safe as the seed sits in soil or other environments. The embryo is the young plant inside that will grow when the seed germinates, the endosperm stores food for the developing plant, and the pollen grain is the male cell that fertilizes the ovule—neither provides the protective outer shell for the seed.