Question

Рассмотрите строение мезофила, лежащие под эпидермисом. Отметьте их окраску, форму взаимное расположение. Сравните клетки столбчатого и губчаттго мозофила. Где больше межклетников? Плиз помогите​

Answer 1

Ответ:

толбчатый мезофилл - фотосинтезирующая паренхима, располагающаяся на верхней стороне листа.клетки расположены плотно друг к другу, вытянутой формы. основная ф. - фотосинтез.

губчатый мезофилл - фотосинтезирующая паренхима, располог. на нижней стороне листа. крупные межклетники. клетки округлой формы. основная функция - транспирация, газообмен, транспорт веществ, фотосинтез - в меньшей степени, ибо мало хлоропластов.

Объяснение:

Answer 2

Structure of Mesophyll Cells

The mesophyll cells are located beneath the epidermis in plant leaves. They are responsible for photosynthesis, which is the process by which plants convert sunlight into energy. The mesophyll cells are divided into two main types: the palisade mesophyll and the spongy mesophyll.

Palisade Mesophyll: - The palisade mesophyll cells are located in the upper part of the leaf, just beneath the upper epidermis. - They are elongated and cylindrical in shape, arranged vertically in a compact manner. - These cells contain a large number of chloroplasts, which are responsible for capturing sunlight and carrying out photosynthesis. - The chloroplasts give the palisade mesophyll cells a green color, as chlorophyll, the pigment responsible for capturing sunlight, is green in color.

Spongy Mesophyll: - The spongy mesophyll cells are located in the lower part of the leaf, just beneath the palisade mesophyll. - They have a more irregular shape and are loosely arranged, leaving air spaces between them. - The air spaces allow for the exchange of gases, such as carbon dioxide and oxygen, which are necessary for photosynthesis. - The spongy mesophyll cells also contain chloroplasts, although they are fewer in number compared to the palisade mesophyll cells. - Due to the presence of air spaces, the spongy mesophyll cells have a less dense appearance compared to the palisade mesophyll cells.

Comparison of Palisade and Spongy Mesophyll Cells

The palisade and spongy mesophyll cells have some similarities and differences:

Similarities: - Both types of cells are involved in photosynthesis. - They contain chloroplasts, although the palisade mesophyll cells have a higher concentration. - They are both located beneath the epidermis.

Differences: - The palisade mesophyll cells are elongated and cylindrical in shape, while the spongy mesophyll cells have a more irregular shape. - The palisade mesophyll cells are arranged vertically in a compact manner, while the spongy mesophyll cells are loosely arranged, leaving air spaces between them. - The palisade mesophyll cells are located in the upper part of the leaf, while the spongy mesophyll cells are located in the lower part. - The palisade mesophyll cells have a higher concentration of chloroplasts, giving them a denser appearance and a greener color. - The spongy mesophyll cells have fewer chloroplasts and contain air spaces, allowing for gas exchange.

Interstitial Spaces

The interstitial spaces, or air spaces, are present between the spongy mesophyll cells. These spaces allow for the exchange of gases, such as carbon dioxide and oxygen, which are necessary for photosynthesis. The interstitial spaces also provide a pathway for the movement of water vapor and other gases within the leaf.

In terms of the number of interstitial spaces, the spongy mesophyll cells have more compared to the palisade mesophyll cells. This is because the spongy mesophyll cells are loosely arranged, leaving larger gaps between them. The presence of interstitial spaces in the spongy mesophyll cells facilitates the diffusion of gases and the movement of water vapor within the leaf.

I hope this information helps! Let me know if you have any further questions.