Q. Do seed plants require water for fertilization?
Classify seed plants The lush palms on tropical shorelines do not depend on water for the dispersal of their pollen, fertilization, or the survival of the zygote—unlike mosses, liverworts, and ferns of the terrain. Seed plants, such as palms, have broken free from the need to rely on water for their reproductive needs.
Q. Why is external water needed for fertilization in seedless plants?
Seedless vascular plants reproduce through unicellular, haploid spores instead of seeds; the lightweight spores allow for easy dispersion in the wind. Seedless vascular plants require water for sperm motility during reproduction and, thus, are often found in moist environments.
Q. What plant needs water for fertilization?
Bryophytes
Q. Which of the following does not require water for reproduction?
Gymnosperms are seed plants and they differ from seedless plants in not requiring water for sperm to swim in to reach the egg.
Q. Which one of the following does not require external water for fertilization?
3) Pisum and maize does not require water for the fertilization.
Q. Which group depend on external source of water?
Which groups depend on external source of free water A) Algae, mosses and ferns.
Q. Which group depend on external source of water for fertilization?
Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes.
Q. Which of the following groups of plants depends on free water for fertilization?
The seedless vascular plants include club mosses, whisk ferns, horsetails, and ferns. Some of the plants in this group still need water for fertilization. Unlike the bryophytes, the sporophyte generation is dominant. The gamete-producing plant, or gametophyte generation is free-living but very small.
Q. Which of the following groups of plants depend on water for reproduction?
Bryophytes depend on water for reproduction and survival. In common with ferns and lycophytes, a thin layer of water is required on the surface of the plant to enable the movement of the flagellated sperm between gametophytes and the fertilization of an egg.
Q. How do seedless plants reproduce?
Reproduction in Seedless Plants. Seedless plants can reproduce asexually or sexually. Some seedless plants, like hornworts and liverworts, can reproduce asexually through fragmentation. When a small fragment of the plant is broken off, it can form a new plant.
Q. What advantages do seed plants have over seedless plants?
What reproductive advantages do seed plants have over seedless vascular plants and nonvascular plants? The plants have seeds that can be dispersed with the wind or by other means.
Q. What is the advantage of producing a seed?
Seeds provide a protective coat so that the embryo plant can develop when it finds a nice piece of soil. Seeds are a protective structure that lets a plant embryo survive for long periods of time before it germinates. The seed can remain dormant until conditions are suitable for the embryo to begin growing.
Q. Are spores like seeds?
The main difference between spores and seeds as dispersal units is that spores are unicellular, the first cell of a gametophyte, while seeds contain within them a developing embryo (the multicellular sporophyte of the next generation), produced by the fusion of the male gamete of the pollen tube with the female gamete …
