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mrs_skeptik [129]
3 years ago
12

Explain how protoadry prevents self polllination​

Biology
1 answer:
NeTakaya3 years ago
5 0

Explanation:

Protandry - Male reproduction organ/anthers androecia/ stamens mature earlier than female reproduction organ/ carpels/ stigma/ pistil/ gynoecium in a flower. (ii) Self sterility - pollen grains are sterile to stigma of the same plants or same flowers.

I hope it's helpful for you.....

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Explain why John converted change in mass to percentage change in mass.
EleoNora [17]

Answer:

Explanation:

The difference in mass does not deal with the proportional aspect of the solutions, making the results less accurate. The percent was calculated to give an exact difference, along with considering the quantities of solution.

mark me a brainliest

5 0
3 years ago
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Are gender traits completely a result of societal expectations?
musickatia [10]

\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}\star

No. Gender traits in humans are largely determined by biophysical processes. There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary.

But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to.

This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development

4 0
3 years ago
A male bird with the genotype GGBb is crossed with a female bird with the genotype Ggbb. What trait will most likely be observed
Julli [10]

Answer:

Dominant G will show always and dominant B will show 2 times in a 4 square punnet square

Explanation:

By making a punnet square/grid you can make a type of probability calculator for traits

6 0
3 years ago
Interaction: lungs supply oxygen carried by blood to cells of the body
Lubov Fominskaja [6]

Answer:

Lungs supply oxygen carried by blood to cells of the body. The cells which are responsible for the transportation of oxygen is hemoglobin. When oxygen rich hemoglobin reaches a cell so the oxygen is unloaded and carbondioxide which is produced as a waste product is loaded in hemoglobin. Again this hemoglobin goes to the lungs and dispose carbondioxide there and repeat the process again.

7 0
4 years ago
The species diversity of an evolutionary lineage will increase when more new member species originate than are lost to extinctio
lesantik [10]

Answer:

A. 2 speciation events and 5 extinctions

B. 5 speciation events and 1 extinction

Explanation:

As we can see from the diagram, there were only 2 ,aim speciation events for lineage A. The extinction events were 5 for the A lineage. Hence, as the extinction event was more rapid than the speciation event so lineage A contains only one species.

On the other hand, the diagram shows that for lineage B there were 5 speciation events and just 1 extinction event. Hence, the number of species in lineage B were more at the time zero as just one extinction had occurred.

5 0
3 years ago
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