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Viefleur [7K]
2 years ago
13

Please hurry im timed while doing this. thanks

Biology
2 answers:
melamori03 [73]2 years ago
7 0
Rainfall i believe bestie
iren [92.7K]2 years ago
3 0

rainfall  i think

Explanation:

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What is true about the
Alex17521 [72]

Answer:2

Explanation: Sperm cells in plants are found inside the pollen grain. When the pollen grains fall on the stigma, the pollen raptures and forms a pollen tube then the sperm cells pass through the pollen tube to the ovary.

6 0
3 years ago
A pedigree chart can show a trait that is:
Illusion [34]
It is a dominant and that the allele for nontasting id recessive

3 0
3 years ago
Differences between arteries, veins and capillaries​
matrenka [14]

Answer:

There are three main types of blood vessels:

1)Artery ---

i) It is a blood vessel having a thick wall.

ii) It carries blood from the heart to different parts of the body.

iii) On regulatory demand of the body it can dilate or constrict.

iv) It doesn't contain any valve.

v) All arteries carry oxygenated blood except the pulmonary artery.

2)Vein ---

i) It is a blood vessel having a thin wall.

ii) It brings blood from different parts to the heart.

iii) It can't dilate or constrict under normal conditions.

iv) It contains valves that allow the blood to flow in one direction towards the heart.

v) All veins carry deoxygenated blood except the pulmonary vein.

3)Capillary ---

i) It is a very narrow blood vessel that has very thin walls.

ii) It forms a network throughout the body in all living cells connecting arteries to veins.

iii) It can dilate or constrict according to the requirement of tissue.

iv) It doesn't have any valve.

v) It contains mixed blood as it connects arteries and veins

5 0
2 years ago
How many combinations of genotypes are possible for the coat coloration of rabbits which is governed by three alleles?
Dmitriy789 [7]

Answer:

b) 6

Explanation:

There are three different alleles (A,B,C) which are responsible for coat coloration but only combination of two can move forward because there are two loci at every homologous pair of chromosomes.

Thus, six combinations can be formed as AA, AB, AC, BB, BC, CC.

7 0
3 years ago
Cigarette smoke contains carbon monoxide. Explain how this
Olegator [25]

Answer: Carbon Monoxide is a very harmful and toxic gas which is formed from incomplete combustion of carbon.

Explanation: red blood cells contain haemoglobin ,which are responsible for carrying oxygen into our body system. So oxygen combines with haemagoblin to form oxyhaemogoblin in the red blood cells .

so if a person starts to intake cigarettes which contain high amounts of carbon monoxide ,it reduces oxyhaemogoblin formation because it binds very tightly to the haemogoblin .then carboxyhaemogoblin is formed and its permanent so causing reduction in aerobic respiration, and reduction in oxygen transport and causing damages to heart muscles.

Hope this helps if you need any more explanation feel free to comment in the comment section below !!!

6 0
3 years ago
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