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Phantasy [73]
3 years ago
15

Difference between companion cell and sieve tube

Biology
1 answer:
9966 [12]3 years ago
3 0

Answer:

The main difference between sieve tubes and companion cells is that sieve tubes are the long, narrow, pointed tubes present in the phloem of angiosperms whereas companion cells are attached to the sieve tubes, regulating the activity of sieve tubes.

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Describe how energy and matter move through the environment under both aerobic and anaerobic conditions answer in 1-2 paragraphs
Karo-lina-s [1.5K]

Answer:

6

Explanation:

6 0
4 years ago
A ________ is an animal that can transfer infectious pathogens from one host to another.
kifflom [539]

Answer:

Vector

Explanation:

<u>Diseases can be transmitted by the mechanical or the biological vector. Vector is an animal (typically can be called as an arthropod) which carries disease from one host to another. </u>

Mechanical transmission is the one in which an animal which carries the pathogen from on host body to the another without being infected by it. It is facilitated by the mechanical vector.

Biological transmission is th eone which occurs when pathogen reproduces within the biological vector which transmits pathogen from one host body to the another.

5 0
4 years ago
According to scientists, all of the bodies in the universe came from a rotating cloud of gases and dust about
Llana [10]

It's either 3.5 or 1.2

There would be more evidence spread out through space to be noticed by scientists and it seems like a stretch to go as far back as 4 billion years ago.

(I mean really? That much before the DINOSOURS died? I don't think so)

◕‿◕

Hope this helps

Miri

5 0
3 years ago
Why does survival of the fillest not
dlinn [17]

Answer:

Survival of the Fittest means that animals best suited to a certain area will survive, not that the largest will survive. An example of this is the mouse.

Explanation:

When an animal adapts to live longer, they are adapting to their predators and their environment. For smaller animals, like mice, being big might mean that hawks are able to find them easier, leaving only the small mice to reproduce. I hope this helps!

4 0
3 years ago
The bird, Parus major, is commonly found in man-made habitats. During the summer these birds primarily feed on insects, and in t
natima [27]

Answer:

The correct answer is option C. "Longer beaks allow the birds to better access seeds in bird feeders".

Explanation:

Since climate change makes more difficult for "<em>Parus major</em>" birds to feed from its primary source of food in gardens, the birds are adapting to access their second source of food, which is the bird feeder. Longer beaks allow the birds to better access seeds in bird feeders, therefore, the birds are developing longer beaks in order to adapt to their new conditions.

8 0
3 years ago
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