Question

7. Describe the characteristics of, and relationships between, the following: Conifer, cones, staminate, ovulate, microsporangium, megasporangium, microgametophyte, pollen, tube nucleus, generative nucleus.

8. What is the evolutionary importance of pollen grains?

9. What is the difference between monecious and dioecious?

10. Describe the characteristics of, and relationship between, the following: Gymnosperms,

Angiosperms, Coniferophyta, Ginkgophyta, Cycadophyta, Gnetophyta, Anthophyta, Monocots, Eudicots (Dicots).

11. Describe the relationship between ovule, ovary, carpel (pistil), fruit, and seed.

12. How are a conifer seed and flowering plant seed different?

13. Describe the following types of flowers: perfect, imperfect, complete, incomplete, regular,

irregular.

14. Describe the flower characteristics: sepal, receptacle, petal, stamen, anther, filament, carpel,

pistil, stigma, style, ovary, ovule, seed.

15. What are the three layers of the ovary?

16. Explain double fertilization and how it differs from a conifer life cycle.

17. Describe the relationship between the following terms: embryo, plumule, cotyledon, scutellum, endosperm, radicle, epicotyl, hypocotyl, root, and shoot.

18. What are characteristics of monocots and dicots?

19. Describe the characteristics of, and relationship between, the following: vascular bundles, pith, cortex, apical meristem, ground tissue, parenchyma, collenchyma, sclerenchyma, primary growth, secondary growth, cambium, vascular cambium, cork cambium

20. Describe the characteristics of, and relationship between, the following: Auxin, geotropism,

phototropism, gravitropism, cytokinins, gibberellins, abscisic acid, ethylene, apical dominance.

please answer more than one questions

Answer 1

AMSWER (7) :-

conifer:-cone bearing, coneferophyta cones :-Reproductive organs of conifers. They are modified buds, scales are modified leaves. staminate :-A staminate cone contains the male reproductive structures that produce microspores. ovulate:- An ovulate cone contains the female reproductive structures that produce megaspores. Microsporangium:- The microspores develop into pollen grains that are released from the microsporangium. megasporangium:-Megasporangia produce megaspores, which give rise to female (egg-containing) gametophytes.

ANSWER (9) :-

monecious :- male and female flowers are found in single plant.

dioecious :- male flower is in one plant and female flower is in another plant.