List of top Botany Questions

Assertion (A): Loss or gain of a segment of DNA results in alteration in chromosomes.
Reason (R): Alterations in chromosomes do not result in abnormalities.
Choose the incorrect statement with reference to the cyclic electron transport
Identify the correct pair of aerobic and anaerobic nitrogen-fixing bacteria respectively
In the above reaction, a and b are
$2NH_{3} + 3O_{2}$ → a + $2NO_{2} + O_{2}$ → b → $2NO_{3}$
Following is not applicable in terms of plant-water relations, if a seed is soaked in water
Identify the correct statement about fermentation.
Choose the correct statements
a. Inability of seed germination due to immature embryo is called Quiescence.
b. Seed coats of Fabaceae do not absorb $O_{2}$ and $H_{2}O$.
c. Germination of tomato seeds is inhibited by chemical compounds.
d. Seeds of polygonum require exposure to low temperature.
Arrange the following in a sequence in primary succession in water:
A: Sedges and grasses
B: Trees
C: Phytoplankton
D: Free floating plants
In plants, sugar synthesis takes place in
The below reaction is catalyzed by the enzyme:
$CO_{2}$ + $H_{2}$O → $H_{2}CO_{3}$
The reason for the similar size of vascular bundles in monocot leaf
Polyarch and tetrarch vascular bundles generally occur in these
Select the incorrect statements related to anatomical characters from the following
I) Endodermis is a part of the stele.
II) Endodermis with casparian strips are found in the dicot stem.
III) Bulliform cells are found in the upper epidermis of the isobilateral leaf.
IV) Vascular bundles are open in monocot stems.
Transport proteins which act as control points for solute movement are found in
Select the correct statement regarding the cell membrane from the following
Assertion (A): Pollen banks can be used in crop breeding programs.
Reason (R): Pollen grains can be stored for many years in liquid nitrogen.
The structures that appear as “Beads-on-string” in the chromatin and the number of base pairs are
The bonds found in a polynucleotide chain between the individual nucleotides and nitrogen bases are
Bi-collateral vascular bundles can be found in these plants
A. Smilax zeylanica
B. Lilium candidum
C. Lycopersicon esculentum
D. Withania somnifera
A non-staining secondary constriction at a constant location of few chromosomes is called
Assertion (A): Fertilization in Cycas is called siphonogamy and zooidogamy.
Reason (R): Male gametes are multiciliate and carried by pollen tube.
Find the correct matching
A) Carrot -- Flowers appear from the same point of peduncle
B) Cocos -- Flowers protected by the modified bract
C) Achyranthes -- Flowers appear in the varied lengths of pedicels
D) Cassia -- Flowers appear on the flattened peduncle
Assertion (A): Dry dehiscent fruits are usually single seeded.
Reason (R): Tridax fruit is cypsella with pappus like calyx.
State the condition and plant that prevents both autogamy and geitonogamy in this plant.
Identify the organisms based on their cell wall characteristics such as pseudomurein, mycolic acid, stiff cellulose plates, chitin.