Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

What are diatoms, chitin and heterocyst
Asked by harinder | 27 Aug, 2008, 04:44: PM
Expert Answer

Chitin is a tough complex sugar. They form the cell wall of fungi.

Heterocysts are specialized nitrogen-fixing cells formed by some filamentous cyanobacteria, such as Nostoc punctiforme and Anabaena sperica during nitrogen starvation. They fix nitrogen from dinitrogen (N2) in the air using the enzyme nitrogenase, in order to provide the cells in the filament with nitrogen for biosynthesis.. These cells are large and thick-walled . They occurs at intervals along the filaments of these cyanobacteria.

Diatoms belong to kingdom Protista. They are a group of unicellular, microscopic algae that have rigid cell walls composed of silica. These reproduce asexually and may be marine or freshwater.

Answered by | 27 Aug, 2008, 06:14: PM
CBSE 9 - Biology
Asked by tejaram690 | 15 Jun, 2022, 11:05: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by taoraicalvincalvin | 02 Jun, 2022, 02:05: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by asaikeerthana77 | 31 May, 2022, 11:51: AM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by asaikeerthana77 | 31 May, 2022, 11:50: AM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by jiyapatel9909 | 27 May, 2022, 02:18: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by vloggershanvi | 18 Feb, 2022, 11:50: AM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by lakshmithengal | 04 Dec, 2021, 07:34: AM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by drtapankumarb | 25 Nov, 2021, 03:53: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by ni095186 | 24 Aug, 2021, 09:57: AM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by is00331 | 24 Apr, 2021, 08:24: PM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×