List of top Botany Questions

Parbhani Kranti, a variety of Bhindi, has resistance to:

Choose the incorrect statement of the following:

The Book entitled 'systema naturae' was published by

Propionibacterium shermanii is used for the making of:

What is the percentage of Pink colour flowered plants in F2 generation of snapdragon monohybrid cross:

Which one of the following bacteria forms root nodules in Alnus?

Match the following: figure [H]

figure

Based on the given characters, identify the plants in series: i. Solitary inflorescence ii. Self pollination iii. Fasiculated roots A) Asparagus B) Datura C) Tobacco D) Pisum

Choose the correct statements among the following: A) In bryophytes and pteridophytes spores produced are always haploid B) Chlamydomonas will produce only non-motile zoospores C) Plants produced vegetatively or asexually are called clones D) Asexual reproduction is common method in relatively simple organisation organisms

Assertion (A): Conjugation is a conservative process. Reason (R): Donor bacterium generally retain a copy of genetic material as the F plasmid will itself move through the bridge to the recipient cell without replication.

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.

Choose the correct statements among the following: A) Organisms that enrich the nutrient quality of soil is called biofertilizers B) Certain bacteria groups anaerobically on cellulosic material produce large amount of Methane, $CO_{2}$ and $H_{2}$ C) In anaerobic sludge digester bacteria produce hydrogen sulphide only D) Wine and beer are produced by distillation of rice

Assertion (A): Bacterium to provide resistance to insects without need for pesticides is biopesticide. Reason (R): The choice of genes depends upon the crop and targeted pest in pest resistance method.

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.

Choose the correct statement:

Which of the following functions are concerned with the plant growth regulator cytokinin? I. Chloroplast production in leaves II. Stomatal closure III. Root growth and root hair formation IV. Overcome apical dominance

Enzyme-substrate complex (ES-complex) formation was explained with 'Induced-fit' hypothesis by:

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.

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.

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

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

Choose the incorrect statements: I. Transport of water and minerals is essentially unidirectional from roots to stem. II. Phloem facilitates unidirectional flow of water and minerals. III. Organic and mineral nutrients undergo multidirectional transport through phloem.

Choose the incorrect statement among the following.