The productivity of aquatic ecosystem is basically determined by light and____________?

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A structure formed by groups of similar cells organized into loose sheets or bundles performing similar functions is called as:

A. An organ B. An organism C. A Tissue D. A Cell...

True roots absent in_____________?

A. ferns B. bryophytes C. gymnosperms D. angiosperms...

Bacteria which grow either in the presence or absence of oxygen___________?

A. Aerobic bacteria B. Anaerobic bacteria C. Facultative bacteria D. Microaerophilic...

Number of cervical vertebrae is_____________?

A. 5 B. 7 C. 9 D. 12...

Which statement is incorrect about Lock and Key Model________________?

A. Specific enzyme can transform only a specific substrate B. Active site of an enzyme is a non flexible structure C. Active site does not change before during or even after the reaction D. It explains the mechanism of every chemical reaction...