Question

Which of the following plants produce non-motile male gametes? (1)Ulothrix,Marchantia (2)Strobilanthus,Chara (3)Spirogyra,Ulothrix (4) Mangifera,Pinus

Answer 1

Answer:

Which of the following plants produce non-motile male gametes?

(1)Ulothrix,Marchantia

(2)Strobilanthus,Chara

(3)Spirogyra,Ulothrix

(4) Mangifera,Pinus

Answer 2

Magnifera and Pinus are plants which have non-motile male gametes.

Explanation:

• Non-motile gametes are found in the lower plants like the algae or the bryophytes.
• In lower level, the gametes are produced by a special structure called gametangia which is multicellular in origin.
• Antheridium is the male sex organ which produce small antherozoids  or the male gamete.
• Antherozoids bear flagella and are motile in nature. They swim through water to reach the egg or ova.
• In higher plants such as gymnosperms and angiosperms the male gametes are non-motile (eg : Magnifera, Pinus, Conifers etc)
• The process by which the non-motile male gamete is taken to the ovules for the process of fertilisation is called pollination.