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Luda [366]
3 years ago
15

Finally online classe over now tell me tge meaning of tracheophytes?​

Biology
1 answer:
Basile [38]3 years ago
3 0

Answer:

Tracheophytes are distinguished from bryophytes by their highly developed vascular systems, which facilitate the transport of water and nutrients to all parts of the plant. This vascularization adaptation has allowed tracheophytes to become more fully terrestrial than bryophytes, which are still dependent upon moist environments for many reproductive and nutritive functions, as discussed in Bryophytes. Tracheophytes can be broken down into three classes: ferns, gymnosperms, and angiosperms

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Lactase is essential for digesting lactose in milk. This enzyme is specific for this sugar. Why?Molecules and active sites vary
VladimirAG [237]

Answer:

There is a precise compatibility between the active site and the lactose molecule.

Explanation:

An enzyme's active site has a specific shape, where only the substrate it is designed for can fit. It's much like a puzzle, where you must have the right pieces join together or else you wont get a coherent picture.

8 0
3 years ago
Human populations in low-UV environments tend to have more lightly pigmented skin. One explanation is that the selective pressur
nikdorinn [45]

Answer:

Lightly pigmented people tend to be at higher risk of vitamin D deficiency

Explanation:

BACKGROUND KNOWLEDGE:

Human skin is the largest organ of the body which makes boundary line between environment and internal conditions.  Human skin cell produces pigment called melanin when ever it is subjected to Sun. More the melanin pigment produced more will be the skin darkens. Ultraviolet (UV) radiations also come from Sun and responsible for more pigmentation.

ANSWER EXPLANATION:

According to the question darkly pigmentation only occurs when their is high level of UV radiations. High level of UV radiations are also responsible for Vitamin D production.

People with lightly pigmented means that there environment has low level of UV radiations which are the requirement of Vitamin D production. Hence due to low UV radiations peoples with light pigmentation's are also be at higher risk of vitamin D deficiency

7 0
3 years ago
Drag each label to the correct location on the image.
Nadusha1986 [10]

Answer:

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7 0
3 years ago
Both animals and plants must maintain homeostasis in order to stay alive. Plants excrete
sp2606 [1]

Answer:B

Explanation:

8 0
3 years ago
Which of the following phrases best describes cytokinesis?
Leto [7]

Answer:

i think it's division of the cytoplasm

Explanation:

Cytokinesis is the physical process of cell division, which divides the cytoplasm the main cell/ parent cell into two daughter cells.

Cytokinesis starts during the nuclear division phase called anaphase and continues through telophase.

8 0
2 years ago
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