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schepotkina [342]
3 years ago
11

How are the seeds of orange trees scattered by the oranges?

Biology
1 answer:
Valentin [98]3 years ago
8 0
When you look at the orange you see those little dots on it? Those are the seeds they are spread when they are still on the the tree and they blow away onto the ground.
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Which cell junctions form a barrier to the passage of materials?
kkurt [141]

Answer:

The correct answer is - tight junctions.

Explanation:

Tight junctions are one of the cell-cell junctions that make a barrier to the passage of material which is a present in epithelia. This barrier is impermeable to most of the materials with soluble molecules. This barrier is made up of the occludin and claudin proteins.

Tight epithelia have tight junctions and examples of such junctions are the distal convoluted tubule or DCT, and the collecting duct of the nephron in the kidney.

Thus, the correct answer is - tight junctions.

8 0
3 years ago
Which is the longest cell in human body?​
ss7ja [257]

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nerve cell

Explanation:

i did it and got 100

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2 years ago
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mr_godi [17]

Answer:

True

Explanation:

The Drosophila like the mammals possess X and Y chromosomes but as in males in which the XX is female and XY is male, the sex In Drosophila is not determined by the presence of Y chromosomes as a male determining factor are present on the autosomes.

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Thus, true is the correct answer.

the fly is female (Bridges 1921, 1925). Thus, XO Drosophila are sterile males. In flies, the Y chromosome is not involved in determining sex. Rather, it contains genes active in forming sperm in adults.

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3 years ago
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olchik [2.2K]

Answer:

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