Question

The sperm of Cycas is
a. Multiflagellate and very large
b. Small and biflagellate
c. Multiflagellate and small
d. Large and biflagellate

Answer 1

Hint: Cycads belong to all seed-producing plants. They have a dominant diploid sporophyte phase in their life cycle. This is the group of plants having a crown of leaves. Cycads and other gymnosperms have naked seeds. These plants possess their seeds that are borne naked. They do not possess any flower, fruit, thus they belong to gymnosperms.

Complete answer:
Cycads are gymnosperms recognized by crowns of enormous pinnately compound leaves and by cones regularly borne at the finishes of the branches. A few cycads have tall unbranched trunks with armor-like appearance; others have somewhat covered stems with swollen (tuberous) trunks. The sperm of Cycas is multiflagellate and very large. So, option A is correct

The stem has a huge essence encircled by a thin zone of delicate woody tissue. Male cones produce dust that is conveyed by the wind to female cones (borne on isolated plants), where preparation happens. Cycas do not possess any small sperm. So, option C is incorrect.

Slow-developing cycads are utilized as fancy studio plants, yet some endure outside in calm districts (see Cycas). Starch from the stems of certain cycads is consumable after an alkaloid is taken out by intensive cooking. The youthful leaves and seeds of different species additionally are palatable. The sperm is not biflagellate in Cycas. So, options B and D are incorrect.

Hence, the correct answer is option (A).

Note: The stretch among fertilization and preparation is a while in cycads. The sperm cells are multiflagellate. These are among the biggest (300 μm, or 0.01 inch) in the plant. Every dust cylinder may contain 2–22 sperm cells, contingent upon the sort. Cycad incipient organisms produce two seed leaves or cotyledons. They are considered to be a group of plants with large and multiflagellate sperms. They do not possess any flower and fruit.