Diatomaceous earth is obtained froma)Bacillarophyceaeb)Xanthophyceaec)Rhodophyceaed)ChrysophyceaeCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Bacillariophyceae,xanthophyceae and chrysophyceae are classes present in chrysophytes. diatoms include Bacillariophyceae where as dismids in chrysophyceae....

Answer

diatoms belong to Class Bacillariophyceae: that are the pennate diatoms with a raphe whereas b, c, d are group of algae

Answer

Ans is a because diatomaceous earth formed by diatom and diatom is included understand bacillarophyceae.

Answer

Diatomaceous earth is obtained from Bacillariophyceae.

Diatomaceous earth, also known as diatomite, is a naturally occurring sedimentary rock that is composed of the fossilized remains of diatoms, a type of single-celled algae. Diatoms belong to the class Bacillariophyceae, which is a group of photosynthetic protists commonly found in aquatic environments.

Here is a detailed explanation of why the correct answer is option 'A':

Composition of Diatomaceous Earth:
- Diatomaceous earth is primarily made up of the cell walls of diatoms, which are the outer protective covering of these organisms.
- The cell walls of diatoms are composed of silica, a mineral that is abundant in the Earth's crust.
- These silica cell walls are highly porous and have a unique structure that gives diatomaceous earth its characteristic properties.

Formation of Diatomaceous Earth:
- Diatomaceous earth is formed over long periods of time through the accumulation of diatom remains in sedimentary deposits.
- When diatoms die, their silica cell walls sink to the bottom of bodies of water and gradually accumulate on the ocean floor or lake beds.
- Over time, these deposits become compacted and undergo geological processes such as lithification, which transforms the loose sediment into solid rock.

Mining and Processing of Diatomaceous Earth:
- Diatomaceous earth is typically mined from large deposits found in areas where diatomaceous algae were abundant in ancient aquatic environments.
- The mining process involves the extraction of the sedimentary rock from the earth's crust using various techniques such as open-pit mining or underground mining.
- Once the raw material is obtained, it undergoes several processing steps to refine and purify the diatomaceous earth.
- These processing steps may include crushing, grinding, and sieving to remove impurities and achieve the desired particle size for different applications.

Uses of Diatomaceous Earth:
- Diatomaceous earth has a wide range of applications due to its unique properties.
- It is commonly used as a filtering agent in industries such as food and beverage, water treatment, pharmaceuticals, and cosmetics.
- It is also used as an insecticide, as the sharp edges of the diatom particles can damage the exoskeleton of insects and lead to dehydration and death.
- Other uses of diatomaceous earth include its use in cat litter, gardening, and as a natural abrasive in cleaning products.

In conclusion, diatomaceous earth is obtained from Bacillariophyceae, a class of algae that includes diatoms. The fossilized remains of diatoms, which make up diatomaceous earth, are mined and processed to obtain this versatile and widely used material.

Similar NEET Doubts

The diatomaceous earth is used for insulating boilers and steam pipes because

Which one of the following statements is wrong? [2015 RS]

Diatomite (Keiselgurh) is obtained from

Which one of the following statements is wrong?

Hydrocolloid carrageen is obtained from

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company