Megasporophyll

megasporophyll of cycas

megasporophyll of cycas
  1. What are Megasporophyll and Microsporophyll?
  2. What is the meaning of Megasporophyll?
  3. What are the characteristics of Cycas?
  4. What is Megasporophyll in gymnosperms?
  5. What is the difference between Microsporangium and Microsporophyll?
  6. What is the function of Microsporangium?
  7. What is the Megasporophyll in angiosperms?
  8. Which part of angiosperm is equivalent to the Megasporophyll of Cycas?
  9. What is the main function of Cycas leaflet?
  10. Why Cycas is called living fossil?
  11. What is true for Cycas?

What are Megasporophyll and Microsporophyll?

Microsporophyll bears spores that grow into male gametophytes. The microsporophylls located just inside the petals, are the Stamens. Megasporophyll bears spores that grow into female gametophytes. The megasporophylls located just inside the stamens, are the Carpels.

What is the meaning of Megasporophyll?

megasporophyll in British English

(ˌmɛɡəˈspɔːrəfɪl ) a leaf on which the megaspores are formed: corresponds to the carpel of a flowering plant.

What are the characteristics of Cycas?

Morphological Characteristics:

Cycads are an ancient group of seed plants with a crown of large compound leaves and a stout trunk. Cycads are dioecious plants, or in other words, there are separate male and female plants. The female plant produces the seeds, and the male produces cones with pollen in them.

What is Megasporophyll in gymnosperms?

The megasporophyll is a sporophyte that contains megasporangium in gymnosperms. On the other side, the carpel is the female reproductive organs in flowers. The male reproductive organ is known as stamen which is composed of anther and filament. It produces male gamete or pollen grain.

What is the difference between Microsporangium and Microsporophyll?

As nouns the difference between microsporophyll and microsporangium. is that microsporophyll is a leaflike organ that bears one or more microsporangia (contrast megasporophyll) while microsporangium is (botany) a case, capsule or container that holds microspores.

What is the function of Microsporangium?

Microsporangia are sporangia that produce microspores that give rise to male gametophytes when they germinate. Microsporangia occur in all vascular plants that have heterosporic life cycles, such as seed plants, spike mosses and the aquatic fern genus Azolla.

What is the Megasporophyll in angiosperms?

A megasporophyll or carpel is rolled and partly sterilized to produce a stigma, style and ovary containing ovules. Within ovules are present highly reduced female gametophytes known as embryo sacs. Embryo sac formation is preceded by meiosis. So all the cells of embryo sac are haploid.

Which part of angiosperm is equivalent to the Megasporophyll of Cycas?

Megasporophyll of Cycas is equivalent to carpel.

What is the main function of Cycas leaflet?

There are sunken stomata which reduce the loss of water. There are certain thick walled cells of hypodermis which does not allows the passage of water and prevents water loss. The last leaflets are modified to form the spines which reduce the surface area for transpiration.

Why Cycas is called living fossil?

Cycas and Ginkgo are known as living fossils because they have not yet altered over the years while its related members or species have become extinct or fossilized.

What is true for Cycas?

In Cycas the pinnate leaves persist for a few years. The leaves in gymnosperms are well-adapted to extreme conditions like temperature, humidity and wind. The persistent leaves are brown and scaly. Thus the correct option is (b) Brown scales and pinnate green foliage leaves.

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