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DanielleElmas [232]
3 years ago
11

Please answer this question in the picture

Biology
1 answer:
gogolik [260]3 years ago
8 0
Please type the question :)
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Helium nuclei are more difficult to fuse than hydrogen nuclei because they have a greater positive charge.
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Please help me answer these questions!! :) (50 Points) Take your time!!!
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All plants have a life cycle that consists of two distinct forms that differ in size and the number of chromosomes per cell. In flowering plants, the

A hibiscus flower, showing anthers, five stigmas, and pollen.

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large, familiar form that consists of roots, shoots, leaves, and reproductive structures (flowers and fruit) is diploid and is called the sporophyte. The sporophyte produces haploid microscopic gametophytes that are dependent on tissues produced by the flower. The reproductive cycle of a flowering plant is the regular, usually seasonal, cycling back and forth from sporophyte to gametophyte.

The flower produces two kinds of gametophytes, male and female. The female gametophyte arises from a cell within the ovule , a small structure within the ovary of the flower. The ovary is a larger structure within the flower that contains and protects usually many ovules. Flowering plants are unique in that their ovules are entirely enclosed in the ovary. The ovary itself is part of a larger structure called the carpel, which consists of the stigma, style, and ovary. Each ovule is attached to ovary tissue by a stalk called the funicle. The point of attachment of the funicle to the ovary is called the placenta.

As the flower develops from a bud, a cell within an ovule called the archespore enlarges to form an embryo-sac mother cell (EMC). The EMC divides by meiosis to produce four megaspores. In this process the number of chromosomes is reduced from two sets in the EMC to one set in the megaspores, making the megaspores haploid. Three of the four megaspores degenerate and disappear, while the fourth divides mitotically three times to produce eight haploid cells. These cells together constitute the female gametophyte, called the embryo sac.

hope it helps


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Which of the following cell organelles surrounds the nuclear membrane?
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The cell membrane is surrounded partially or totally by the Endoplasmic Reticulum which are membranes that extend along the nuclear membrane.

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