Post-Fertilisation - Endosperm and Embryo Development — Unsolved Practice Set
Chapter: Sexual Reproduction in Flowering Plants | Topic: Post Fertilisation Endosperm and Embryo Development
POST-FERTILISATION - ENDOSPERM AND EMBRYO DEVELOPMENT — UNSOLVED PRACTICE SET
Topic: Post Fertilisation Endosperm and Embryo Development
Multiple Choice Questions
Q1. Endosperm development generally precedes:
- Pollination
- Embryo development
- Fertilisation
- Pollen germination
Q2. The liquid "water" found inside a tender coconut is an example of:
- Cellular endosperm
- Free-nuclear (liquid) endosperm
- Embryo tissue
- Nucellus tissue
Q3. In a typical dicot embryo, the region between the radicle and the cotyledons is called the:
- Plumule
- Hypocotyl
- Epicotyl
- Coleoptile
Q4. The protective sheath covering the plumule in a monocot (grass) embryo is called the:
- Coleorhiza
- Scutellum
- Coleoptile
- Aleurone layer
Q5. The shield-shaped single cotyledon found in grass embryos is called the:
- Scutellum
- Coleoptile
- Radicle
- Plumule
Short Answer Questions
Q6. Why is endosperm development usually completed before embryo development begins in a fertilised ovule?
Q7. Name the three types of endosperm development, and mention which one is seen in coconut.
Q8. Briefly describe, in words, the sequence of stages a dicot zygote passes through to become a mature embryo (from proembryo to mature embryo).
Q9. What are the coleoptile and coleorhiza, and in which type of plant embryo are they found?
Long Answer Questions
Q10. Describe the process of nuclear-type endosperm development, using coconut as an example, and explain why solid copra is formed only later in development.
Q11. Trace the development of a typical dicotyledonous embryo from the zygote stage to a mature embryo, describing the important structures formed at each stage.
APPLICATION / ANALYSIS
Q12. While husking a mature, dry coconut, a student finds only solid white "meat" (copra) and no liquid inside, unlike in a tender coconut. Using your knowledge of endosperm development, explain what has happened to the liquid endosperm as the coconut matured.
Q13. A seed technologist examining a germinating seed observes a single cotyledon along with a sheath-like structure covering the young shoot. Identify whether this seed belongs to a monocot or a dicot plant, and name the specific protective structures you would expect to find covering the plumule and the radicle.