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Ede4ka [16]
2 years ago
6

Plant leaves contain openings called _____, which allow the diffusion of carbon dioxide into the leaf tissue.

Biology
1 answer:
anastassius [24]2 years ago
4 0
The openings are known as stomata. They are openings in leaves which are the passage way for carbon dioxide into the plant
You might be interested in
Name each numbered stage in the plant cell cycle diagram:
zheka24 [161]

Answer:

1. Metaphase

2. Prophase

3. Telophase

4. Interphase

5. Interphase

6. Interphase

7. Anaphase

8. Interphase

9. Telophase

10. Metaphase

11. Interphase

12. Interphase

13. Interphase

14. Interphase

15. Prophase

16. Interphase

17. Metaphase

18. Anaphase

19. Interphase

20. Interphase

21. Prophase

22. Interphase

Explanation:

The cell cycle is divided into two main divisions. The Interphase ad the M phase or the Mitotic phase.

Throughout Interphase, the cell is not dividing yet, but it is preparing to divide. It synthesizes the nutrients it will need, and grows in preparation to become two cells. This is actually the phase the cell spends the longest time.

Mitotic phase is when the cell starts to divide. It is separated into:

Prophase:

In this phase the chromosomes are condensed and mitotic spindles start to form. These spindles are made up of microtubules that will help later on to split the chromosomes. The nuclear membrane disappears so that the chromosomes will be free to move.

Metaphase

This phase is marked by the alignment of the chromosomes in the middle of the cell. They line up and you will find the asters at the opposite ends of the cell, where the microtubules stem from, attaching themselves to the center of the chromosomes, which we call the kinetochore.

Anaphase

In this phase you will see that the chromosomes are separated by the spindle fibers and are pulled at opposite ends of the cell. The cell then becomes longer by the other spindle fibers that are not attached to a chromosome.

Telophase

This phase is the end phase. The two sets of chromosomes are then enclosed by new nuclear membranes forming two nuclei and other cellular structures just as the cells are about to separate completely. As the two new cells move further apart, in plant cells a cell plate forms, dividing the two cells. The movement of the two cells splitting apart is called cytokinesis and it happens just as mitosis is about to end.

Attached is a picture of the cell cycle of a plant cell.

4 0
2 years ago
When a double helix of dna is replicated, two complete helices are formed. together, these helices are called sister __________?
Degger [83]
Chromitids is the correct answer
6 0
2 years ago
The delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together is the
Dafna1 [17]

Answer:

Endomysium

Explanation:

Endomysium is a thin layer of loose connective tissue which surrounds an individual myocyte or muscle fiber. Collagen is one of the most abundant protein found in this layer. Endomysium also connects the near by muscle fibers to each other. These fibers are then able to exchange various ions necessary for muscle contraction.

Above the level of endomysium, there is perimysium which forms the covering of a bundle of muscle fibers. Even above this level is epimysium which covers the whole muscle.  

3 0
2 years ago
A scientific explanation of kown facts arrived at through repeated testing over time
snow_tiger [21]
That would be a scientific theory.
4 0
2 years ago
You find a fossil that you think is about 350 million years old. You decide to use 235U to date a volcanic ash bed just below th
devlian [24]

Answer:

I would expect that the sample has only 50% of the original 235 U.

Explanation:

That is because 235 U has a half-life of 700 million years and I expect that my sample be 350 million years old. 350 is half of 700.

8 0
2 years ago
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