Q.

What is Primary Productivity?

Q.

The rate of storage of organic matter in producers in excess of their metabolic consumption is:

Biomass
Community productivity
Net primary productivity
Gross primary productivity

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Q.

In an ecosystem the rate of production of organic matter by producers which is available to herbivores is?

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Q.

Match List–I with List–II and select the correct answer using the codes given below the lists

$\begin{matrix} L i s t I & L i s t I I A . A . T h e a m o u n t o f e n e r g y a c c u m u l a t i o n i n & 1. G r o s s p r i m a r y p r o d u c t i v i t y . g r e e n p l a n t s t h r o u g h t h e p r o c e s s o f p h o t o s y n t h e s i s B . T h e t o t a l o r g a n i c m a t t e r s y n t h e s i z e d b y & 2. P r i m a r y p r o d u c t i v i t y t h e p r o d u c e r s i n t h e p r o c e s s o f p h o t o s y n t h e s i s p e r u n i t t i m e a n d a r e a . C . R a t e o f s t o r a g e o f o r g a n i c m a t t e r & 3. S e c o n d a r y p r o d u c t i v i t y i n p l a n t t i s s u e s i n e x c e s s o f t h e r e s p i r a t o r y u t i l i z a t i o n d u r i n g t h e m e a s u r e m e n t p e r i o d D . R a t e o f e n e r g y s t o r a g e a t c o n s u m e r l e v e l & 4. N e t p r i m a r y p r o d u c t i v i t y \end{matrix}$

A-1 B-2 C-3 D-4
A-1 B-3 C-4 D-2
A-1 B-2 C-4 D-3
A-2 B-1 C-3 D-4

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Q. If CO

_{2}

is removed totally from the biosphere, which organism will be affected first?

Consumers
Secondary consumers
Producers
Primary producers

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Q. Carbon dioxide fixation is associated with _________.

Kreb's cycle
Glycolysis
Calvin cycle
Photorespiration

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Q. a) What is ecological secession?
b) Represent an ideal pyramid of number in a grassland ecosystem.
c) Name the two types of nutrient cycles with an example each.

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Q.

Match List–I with List–II and select the correct answer using the codes given below the lists

$\begin{matrix} L i s t I & L i s t I I A . A . T h e a m o u n t o f e n e r g y a c c u m u l a t i o n i n & 1. G r o s s p r i m a r y p r o d u c t i v i t y . g r e e n p l a n t s t h r o u g h t h e p r o c e s s o f p h o t o s y n t h e s i s B . T h e t o t a l o r g a n i c m a t t e r s y n t h e s i z e d b y & 2. P r i m a r y p r o d u c t i v i t y t h e p r o d u c e r s i n t h e p r o c e s s o f p h o t o s y n t h e s i s p e r u n i t t i m e a n d a r e a . C . R a t e o f s t o r a g e o f o r g a n i c m a t t e r & 3. S e c o n d a r y p r o d u c t i v i t y i n p l a n t t i s s u e s i n e x c e s s o f t h e r e s p i r a t o r y u t i l i z a t i o n d u r i n g t h e m e a s u r e m e n t p e r i o d D . R a t e o f e n e r g y s t o r a g e a t c o n s u m e r l e v e l & 4. N e t p r i m a r y p r o d u c t i v i t y \end{matrix}$

A-1 B-2 C-3 D-4
A-2 B-1 C-3 D-4
A-1 B-3 C-4 D-2
A-1 B-2 C-4 D-3

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Q. The graph shows the relation between light intensity and the giving off and taking up of carbon dioxide by the leaves of a plant. Why is most carbon dioxide given off when the light intensity is zero units?

Because it just the start of the experiment.
Only respiration is taking place at this intensity of light.
Only photosynthesis is taking place at this intensity of light.
The rate of photosynthesis is equivalent to the rate of respiration.
The rate of photosynthesis is more than the rate of respiration.

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Q.

Match List–I with List–II and select the correct answer using the codes given below the lists

$\begin{matrix} L i s t I & L i s t I I A . A . T h e a m o u n t o f e n e r g y a c c u m u l a t i o n i n & 1. G r o s s p r i m a r y p r o d u c t i v i t y . g r e e n p l a n t s t h r o u g h t h e p r o c e s s o f p h o t o s y n t h e s i s B . T h e t o t a l o r g a n i c m a t t e r s y n t h e s i z e d b y & 2. P r i m a r y p r o d u c t i v i t y t h e p r o d u c e r s i n t h e p r o c e s s o f p h o t o s y n t h e s i s p e r u n i t t i m e a n d a r e a . C . R a t e o f s t o r a g e o f o r g a n i c m a t t e r & 3. S e c o n d a r y p r o d u c t i v i t y i n p l a n t t i s s u e s i n e x c e s s o f t h e r e s p i r a t o r y u t i l i z a t i o n d u r i n g t h e m e a s u r e m e n t p e r i o d D . R a t e o f e n e r g y s t o r a g e a t c o n s u m e r l e v e l & 4. N e t p r i m a r y p r o d u c t i v i t y \end{matrix}$

A-1 B-2 C-3 D-4
A-2 B-1 C-3 D-4
A-1 B-3 C-4 D-2
A-1 B-2 C-4 D-3

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Q.

Match List–I with List–II and select the correct answer using the codes given below the lists

$\begin{matrix} L i s t I & L i s t I I A . A . T h e a m o u n t o f e n e r g y a c c u m u l a t i o n i n & 1. G r o s s p r i m a r y p r o d u c t i v i t y . g r e e n p l a n t s t h r o u g h t h e p r o c e s s o f p h o t o s y n t h e s i s B . T h e t o t a l o r g a n i c m a t t e r s y n t h e s i z e d b y & 2. P r i m a r y p r o d u c t i v i t y t h e p r o d u c e r s i n t h e p r o c e s s o f p h o t o s y n t h e s i s p e r u n i t t i m e a n d a r e a . C . R a t e o f s t o r a g e o f o r g a n i c m a t t e r & 3. S e c o n d a r y p r o d u c t i v i t y i n p l a n t t i s s u e s i n e x c e s s o f t h e r e s p i r a t o r y u t i l i z a t i o n d u r i n g t h e m e a s u r e m e n t p e r i o d D . R a t e o f e n e r g y s t o r a g e a t c o n s u m e r l e v e l & 4. N e t p r i m a r y p r o d u c t i v i t y \end{matrix}$

A-1 B-2 C-3 D-4
A-2 B-1 C-3 D-4
A-1 B-2 C-4 D-3
A-1 B-3 C-4 D-2

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What Is Respiration Loss

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