Ask question

Ask question

All categories

3 years ago

12

Why do gymnosperms and lower vascular plants lack companion cells?

1 answer:

IRINA_888 [86]3 years ago

4 0

Answer:

Gymnosperms and lower vascular plants have sieve cells as their sieve elements, while sieve tubes are characteristic of flowering plants angiosperms. In gymnosperms, typical companion cells are lacking in the phloem. In gymnosperms, generally the xylem contains only tracheids. Vessels are absent.

Explanation:

did that help?

You might be interested in

Zebra mussels were first discovered in North America in the Great Lakes in 1988. This invasive species eats phytoplankton and ot

Vinvika [58]

B. The answer is B :)

4 0

3 years ago

Read 2 more answers

What allows recessive traits

saw5 [17]

I believe the answer to that would be B

5 0

4 years ago

Read 2 more answers

Name 2 parts of the nervous system and explain what each part does

Tju [1.3M]

The brain it sends messages to the spinal cord which aids for the movement of the body
spinal cord aids for movement

7 0

3 years ago

According to the image below, which season is about to begin in the southern hemisphere?

AfilCa [17]

The answer to this question is summer I know this for a fact cause I took biology last year your welcome

5 0

4 years ago

Read 2 more answers

Introduction: In 1915, a German scientist named Alfred Wegener proposed the theory of continental drift. According to this theor

nexus9112 [7]

Answer:

Pangaea, which looked like a C, with the new Tethys Ocean inside the C, had rifted by the Middle Jurassic, and its deformation is explained below.

Explanation:

6 0

3 years ago