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frosja888 [35]
3 years ago
5

Select all that apply. What are some of the ways organisms reproduce asexually?

Biology
1 answer:
uysha [10]3 years ago
6 0
Fission is one of them
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Your six friends have just arrived from Canada back to their school’s biology lab.
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I think this is correct

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ILL GIVE BRAINLIEST When an organism is bred for a particular characteristic or trait it is called
Serhud [2]

Answer:

A. Selective breeding

Explanation:

Imagine your at school or where ever you wanna be and you see a girl/boy that you really like because of their lips or how great their hair looks or the size of their eyes or what ever else. ( Sorry for some of those very visual images there... ) That's called selective breeding.

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What is causing the disappearance of mangrove forests in salt marshes?
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Human destruction 
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You have learned that the fusion of egg and sperm produces a zygote. But how does the sperm reach the egg, and how does the zygo
FrozenT [24]

Answer:

Pollen grain lands on stigma

Explanation:

A) Pollen grain lands on stigma

  • pollen tube grows down the style
  • generative cell divides, forming two sperm
  • two sperm are discharged to them female gametophyte
  • sperm fuse with the egg and two polar nuclei
  • zygote forms and divides into a terminal cell and a basal cell
  • cells of embryo differentiate into three tissue types---- seed dries out and becomes dormant.

B)

  1. During pollination, a pollen grain is transferred from an anther to a stigma. Once the pollen grain lands on a suitable stigma, it germinates and forms a pollen tube, a structure that grows down through the style to the ovary.
  2. Once in the pollen tube, the generative cell from the pollen grain divides by mitosis, forming two sperm. The sperm travel down the pollen tube and are discharged into the female gametophyte. In a process called double fertilization, one sperm fertilizes the egg, forming the zygote; the other sperm fuses with two polar nuclei in the female gametophyte, forming a triploid (3n) nucleus. The zygote develops into the plant embryo, and the triploid nucleus divides and gives rise to the endosperm. Double fertilization prevents the waste of the plant's resources by ensuring that the nutrient-rich endosperm only develops if the egg is fertilized.
  3. After double fertilization, the ovule starts to develop into a seed containing the plant embryo. As the embryo develops, the three tissue systems are established, and the cotyledons (seed leaves) form. The seeds of many species dry out as they mature. These dry seeds lie dormant until suitable germination conditions occur.

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Fast glycolytic muscle fibers ______. are abundant in muscles of the lower limbs, contract quickly, and are oxygen-dependent are
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Fast-glycolytic muscle fibers are another name for Type IIb skeletal muscle fibers and are white in color. The skeletal muscle fibers are divided into three types: Slow-contracting muscle fiber (Type I), Fast-contracting muscle fiber (Type IIa) and Fast-contracting muscle fiber (Type IIb).

Fast-glycolytic muscle fibers Type IIb are abundant in muscles of the lower limbs that contract quickly and are oxygen dependent, prevalant in postural muscle of the back, generate lots of power and depend on lots of power and depend on anaerobic pathways to make ATP , have fewer but larger myofilaments and numerous mitochondria, have abundant myoglobin.

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