2019-03-01 Biology Times

Biology Times (^) March 19
which is helpful in activating many enzymes in
photosynthesis.

13. (c)Some of the non-leguminous plants also fix
    nitrogen. Eg: Alnus plant to which Frankia is
    involved in formation of nodule.


14. (a) Casuarina plant has association of nitrogen
    fixing organism called Frankia which is present
    in root nodule


15. (d) Ca is an essential macronutrient which is
    involved in activating many enzymes, it is a
    constituent of middle lamella and connected with
    chromosome formation.
    16. (b) According to mass flow hypothesis the organic
    solutes are translocated from source to sink, this
    transport also requires metabolic energy.
    17. (b)Micronutrient or trace elements are required
    for various uses. It is mainly involved in activating
    certain enzymes.
    18. (d) Mn is a trace element. Its deficiency causes
    grey spots in oat.
    19. (a) The leaves of Azolla contain colonies of
    Anabaena which have the capacity to fix
    atmospheric nitrogen.

PUZZLE SOLUTION: FEBRUARY MONTH ISSUE

II. Match the following

I.

1 G

2 H E T E R O Z Y G O U S

3 P H E N O T Y P E

4 G E N E 5 A L L E L E

6 M U T A T I O N

7 P I S U M S A T I V U M

8 R C P U N N E T

9 T E S T C R O S S

10 K A R Y O T Y P E

Ans: e, b, c, d, a.