List of top Botany Questions

Identify the similar behavior between chromosomes and genes:
A. Only one pair segregates independently
B. Occurs in pairs
C. Segregates at the gamete formation and only one of each pair is transmitted to gametes
D. Pair segregates independently

Match the following list: 


 

Match the following list: 


 

Match the following list: 


 

Choose the correct statement related to growth rate, conditions and growth substances:
A. Root elongation is the arithmetic growth
B. Geometric growth shows sigmoid growth curve
C. Turgidity helps the cells in extension growth
D. Natural cytokinins are synthesised in older parts of the plant

Match the following list: 


 

Assertion (A): Light harvesting complexes made up of many pigments bound to proteins and are called antennae. 
Reason (R): Antennae absorb different wavelengths of light. 
 

Choose the correct statement among the following
A. The first action spectrum of photosynthesis was observed in the Cladophora experiment.
B. Chlorophyll 'b' will appear blue-green in the chromatogram.
C. In the biosynthetic phase of photosynthesis, ATP and NADPH are used.
D. In photosynthesis, light saturation occurs at 10% of full sunlight.
E. In CAM plants, RuBisCo will be absent.

Find the incorrect statement regarding Enzymes
A. Enzymes catalyzing the linking together of two compounds are lyases.
B. Glutamic acid is converted into glutamine in the presence of glutamine synthetase.
C. The average content of ‘S’ and that of the transition state is called activation energy.
D. Inorganic catalysts work similarly to enzymes at high temperatures.
 

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Assertion (A): Some essential elements can alter the osmotic potential of a cell. 
Reason (R): Sulphur is the main constituent of several coenzymes. 
 

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Assertion [A] : Bulk flow can be achieved either positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient.
Reason [R] : Movement in the xylem is always bidirectional.
Assertion (A): Hydrophytes contain aerenchyma, which helps in gaseous exchange and buoyancy.
Reason (R): Mechanical tissues and xylem are poorly developed.

Identify the correct combinations from the following: 


 

The tissues generally present exterior to the vascular cambium made up of these tissues:

Identify A, B, C, and D parts in the vascular bundle of monocot stem: 

Assertion (A): Phloem fibres (bast fibres) are made up of sclerenchymatous cells. 
Reason (R): Phloem fibres are generally absent in primary phloem but found in secondary phloem.

Identify the correct combinations from the following: 


 

In DNA, the bond between the phosphate and hydroxyl group of sugar:
Chromosomes with equal arms:

Match the different shapes of the cells: 


 

Correct floral formula of mustard plant:
Identify the wrong matching
Formation of an embryo from an unfertilized female gamete