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svet-max [94.6K]
3 years ago
15

What is the nature of cell-walls in diatoms​

Biology
1 answer:
fgiga [73]3 years ago
3 0

Answer:

The cell walls of diatoms are made of silica. Their cell wall construction is known as frustule. It consists of two thin overlapping shells that fit into each other such as a soap box. When the diatoms die, the silica in their cell walls gets deposited in the form of diatomaceous earth.

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2 years ago
A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte
sukhopar [10]

Answer:

A) The pollen grains will be pure red.

Explanation:

Plants have alternation of generations, this means that there are two different stages in their life-cycle: a sexual haploid (n) phase and an asexual diploid phase (2n). These phases occur in different individuals, so there is an haploid plant called gametophyte that carries gametes and after fecundation, it will rise a diploid sporophyte (asexual).  

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3 years ago
The barn owl is nocturnal. Describe the biological rhythm of the owl and discuss how extreme alterations in the number of daylig
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<h2>History of Owl</h2>

Explanation:

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  • They likewise approach loads of various nourishment sources in light of the other living animals in the woodland.
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