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Lyrx [107]
4 years ago
5

What is double fertilisation

Biology
2 answers:
horsena [70]4 years ago
7 0

Double fertilization is a complex fertilization mechanism of flowering plants. This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes ( It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower.

Hope this helps!

-Payshence

Phoenix [80]4 years ago
6 0
Double fertilization is a complex fertilization mechanism of flowering plants. This process involves the joining of a female gametophyte with two male gametes. It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower.
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Answer: Is this multi choice?

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Suppose you observed 32 whitefish blastula cells. One cell was in metaphase, 3 were in anaphase, 8 were in prophase, and 4 were
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Answer:

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Explanation:

Eight prophase cells, one metaphase cell,three anaphase cells, and four telophase cells. It results in 8 + 1+ 3 + 4 = 16 cells.This indicates that the remaining cells of 32-16 = 16 were in interphase.This means the cells spend the maximum amount of time in interphase.This time is equal to half the total cells.

So, if it's a 24-hour process,the interphase should spend 12 hours.

Six hours of prophase, 45 minutes in metaphase and 2 hour, 15 minutes in anaphase, and 3 hours in telophase.

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The variety of different ways in which species within an ecosystem perform “jobs” that benefit the ecosystem and make it more re
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Compare the concentration of connective tissue cells found in bone with the concentration of those found in blood.
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Answer: CONNECTIVE TISSUE is the most abundant tissue in the body which are widely separated from each other and intercellular substance (matrix) is present in considerably larger amounts. The principal cell of connective tissue are fibroblasts which makes fibres found in almost all connectiv tissues. Some are solid and strong (bone), while others are fluid and flexible( blood).

Explanation:

Connective tissues usually contain fibres present in the matrix which may be of semisolid jelly-like consistency or dense and rigid, depending upon the position and function of the tissue. There are three main types of connective tissue which include:

--> Loose connective tissue

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The bone and the blood are considered to be an example of specialised connective tissue. This is so because they both contain a number of different tissues with specialized cells and unique ground substances.

The BONE consists of osteoblasts, osteocytes, and osteoclasts. It is considered to be a specialised connective tissue because the bone cells are surrounded by a matrix of collagen fibres strengthened by inorganic salts, especially calcium and phosphate.

The BLOOD consists of red blood cells, white blood cells, platelets. It is considered to be a specialised connective tissue because the blood cells are surrounded by fluid matrix known as plasma and connecta with other cells through its transport functions.

In COMPARING the concentration of connective tissue cells or bone and blood, the connective tissue cells of bone comsist of fibre and collagen which makes it dense and rigid while the connective tissue cells of blood does not contain any fibre, therefore it's flexible.

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Which phrase describes the role of the mitochondria?
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