List of top Botany Questions

Identify the molecules with 4 double bonds with 2 Nitrogen atoms and 4 double bonds with 5 Nitrogen atoms in the following respectively.

Choose the correct statements among the following: A) Some genes are very tightly linked on the same chromosome, which shows higher recombination. B) Sutton proposed the chromosome theory of inheritance. C) Behaviour of the chromosome was parallel to the behaviour of genes. D) Mendel's selection of one of the contrasting traits is seed shape as inflated and wrinkled.

Assertion (A): Though the parents contain two alleles during gamete formation, the alleles of a pair segregate from each other. Reason (R): Segregation is a universal phenomenon in all organisms showing sexual method of reproduction.

Choose the correct statements of the following: A) Long day plant will not flower if the daylength is above the critical photoperiod. B) Biennials are monocarpic plants that normally flower and die in second season. C) Practice of layering the seeds during winter in layer of moist sand and peat is called prechilling. D) ABA plays an important role as antagonist to GAs.

Choose the correct statement:

Assertion (A): Asparagine and glutamine are most important amides found in plants as a structural part of a protein. Reason (R): Amides contain more nitrogen than amino acids as hydroxyl part of the acid is replaced by another $NH_{2}^{-}$ radicle.

Assertion (A): With the increase in substrate concentration the velocity of enzymatic reaction reaches Vmax which is not exceeded by any further rise in substrate concentration. Reason (R): Enzyme molecules are fewer than the substrate molecules.

Match the following lists regarding photosynthesis history:
List-I: (I) Joseph Priestley, (II) T.W. Engelmann, (III) Julius von Sachs, (IV) Jan Ingenhousz
List-II: (A) Green part of the plant process glucose, (B) Light is required for photosynthesis, (C) $CO_2$ is released from green plants, (D) Green plants evolve oxygen, (E) First action spectra of photosynthesis

If 6 $CO_2$ molecules entered into the Calvin cycle, number of G-3-P formed, net gain of G-3-P and G-3-P participated in RUBP regeneration are:

Assertion (A): The four levels of Biological organization are - organisms, populations, communities and Biomes. Reason (R): Since plant ecology and Animal ecology can not be separated both can be considered as Ecology.

Assertion (A): Protenaceous pea seeds swell more on imbibition than starch wheat seeds. Reason (R): Imbibing capacities varies with different types of organic substances.

If 48 Lbs/year $CO_2$ was absorbed by a single tree and $O_2$ released by it supports 2 human beings, How many minimum number of trees require per acre to support 120 human beings, if an acre trees can support oxygen for 18 people per year.

Match the following lists regarding mineral element essentiality: figure [H]

figure

Water potential is decreased when some solute dissolved in water because:

Choose the correct statements among the following: A) Meiosis involves pairing of homologous chromosomes and recombination B) Crossing over is enzyme mediated process C) During diakinesis terminalization takes place D) Interkinesis is the stage between prophase I and prophase II

Waxy material suberin is deposited in the following tissue.

Choose the incorrect statements of the following: A) Parenchyma constitute major components of plant organs B) The anatomy of seed plants was published by Easu C) Protophloem will have broader sieve tubes D) Sieve tube functions are controlled by its nucleus

Assertion (A): Due to the differences in the activity of the cambial ring the amount of secondary xylem is more than secondary phloem in dicot stem. Reason (R): The cambium forms a narrow band of parenchyma which passes through secondary tissues in the radial direction is called secondary medullary ray.

Excluding the carboxyl carbon, identify the number of carbon present in the Arachidonic acid and palmitic acid respectively.

Choose the incorrect statement among the following.

Choose the correct statements among the following: A) As the anthers of Hibiscus is single lobed it will have four microsporangia B) Pollengrain has two layers wall made up of sporopollenin C) By maturation and dehydration, Microspores develop into pollengrain D) Epidermis, endothecium and middle layer will help in dehiscence of anthers

Identify the non-membrane bound bodies in the cell among the following: A) Chloroplast B) Peroxysomes C) Ribosome D) Endoplasmic reticulum E) Phosphate granules F) glycogen granules

Each of the peripheral fibrils in centriole are made up of:

Identify the correct statement with regard to placentation.

Identify the correct statements regarding Bryophytes.