Biology, 04.07.2019 10:00 laciekersey4568

Select the correct answer. the image shows the life cycle of a plant. which class does this plant belong to? a. bryophyte b. gymnosperm c. pteridophyte d. angiosperm

Select the correct answer. the image shows the life cycle of a plant. which class does this plant be

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Answer from: tigermath85

C. pteridophyte

Explanation:

The life cycle corresponds to the ferns or pteridophyte because these plants have a two-phase life cycle, one of sporophyte and the other in gametophyte. These two phases are diploid and haploid. The diploid phase is asexual and the sexual phase is diploid.

The leaves of the fern have in their leaves structures called soros where the sporangia are, they th form the spores and are found through meiosis, when the spores are mature they fall to the ground and germinate in places of high humidity in this way a gametophyte with rhizoids originates It is anchored to the ground. Gametangios develop on the gametophyte. The male gametangios are called anteidios, and the feminine ones are called archegoniums. The female organs contain the ovocell and the male organs contain the sperm. The sperm fertilize the ovocell and the junction forms a zygote. The zygote grows and forms a sporophyte by mitosis, or cell division and the cycle is repeated

Answer from: layshascott

General plant life cycle is represented by the diagram in Figure below. From the figure, you can see that the diploid sporophyte has a structure called a sporangium (plural, sporangia) that undergoes meiosis to form haploid spores. A spore develops into a haploid gametophyte.

Answer is. gymnosperm

Answer from: Quest

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

Answer from: Quest

The answer is a because - is an direction

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