List of top Botany Questions

Assertion (A): Transport of plant growth regulators is strictly polarized and unidirectional.
Reason (R): Organic and mineral nutrients undergo multi-directional transport.
Identify the correct sequence to the following statements
A) Seeds are attached to the fruits
B) Free nuclear endosperm
C) Grass family cotyledon
Options :
Methods for inserting recombinant DNA into host:

I. Selectable marker
II. Disarmed pathogen vector
III. Biolistic method
IV. Microinjection
Mutation is a phenomenon of
1. Alteration of genes
2. Variation in DNA
3. Heritable change in genotype and phenotype of an organism
Choose the correct statement from the following
(I) In Hatch-Slack pathway mesophyll cells lack RuBisCO enzyme
(II) PEP carboxylase is present in bundle sheath of chloroplast
(III) OAA is formed in mesophyll cells
(IV) PEP is primary CO2 acceptor present in chloroplast of bundle sheath cells
Assertion (A): Propionibacterium sharmanii is responsible for large holes in Swiss cheese.
Reason (R): Characteristic texture, flavour and taste of cheese is specific to microorganism.
Identify the correct option from the following:
Choose the correct statements among the following:
1. Duplication of genome, synthesis of other cell constituents, and division to produce new cells is called cell cycle.
2. Interphase is followed by a resting phase.
3. In every cell division, genetic variability will increase from generation to generation.
4. Plant cells can divide mitotically in both haploid and diploid cells.
Identify the correct option from the following:
Match the following
Choose the correct sequence of fruits with the following characters
A. Multicarpellary syncarpous, unilocular ovary with stony pericarp
B. Fruit with fleshy thalamus and developed by inferior ovary
C. Apocarpous gynoecium develops into fruitlets
Based on ICTV system, AIDS virus belongs to the genus:
Choose the incorrect statement among the following:
I. The present era is called “Golden era of Biology”.
II. Sexual system of classification was proposed by Theophrastus.
III. Study of Amphibians of plant kingdom are called Bryology.
IV. Recycling of nutrients takes place by parasitic petrophants.
One acre of trees annually absorbs CO$_2$ equal to that produced by driving 26000 miles. How many people’s oxygen needs for a year does this cover?

Match the following:
 

List INameList IIContribution
AHugo de VriesIMutations
BSturtevantIIGene Mapping
CMorganIIILinkage
DSutton and BoveriIVChromosomal theory
Identify the universal rules of nomenclature among the following
A) Biological names are in Latin and written in italics.
B) The first word to start with small letter for genus.
C) The specific epithet to start with small letter.
D) Each organism name will have two components.

Match the following

List - I List - II 
A.Recombination NodulesI.Anaphase - I
B.Homologous Chromosomes separateII.Anaphase - II
C.InterkinesisIII.Crossing over
D.Splitting of centromere of each chromosomeIV.Stage between two meiotic divisions

Match the pollination types in List-I with their correct mechanisms in List-II: 

List-I (Pollination Type)List-II (Mechanism)
A) XenogamyI) Genetically different type of pollen grains
B) OphiophilyII) Pollination by snakes
C) ChasmogamousIII) Exposed anthers and stigmas
D) CleistogamousIV) Flowers do not open
Choose the correct statements among the following
I. Proton gradient across the membrane decreases due to cyclic flow of electrons between PQ and cytochrome b.
II. NADP reductase enzyme is located on the stroma side of the membrane.
III. PQ removes electron from the stroma
Arrange the intermediate compounds of Kreb's cycle based on number of carbons in ascending order.
Choose the incorrect statements among the following
1. Purines and cytosine are common in DNA and RNA.
2. Thymine is present only in RNA.

3. Uracil is present in DNA at the place of Thymine.
4. Adenine and Guanine are Purines
Three plants, Mustard, Calotropis, and Guava, are collected. There are 30 nodes in Mustard, 30 nodes in Calotropis, 25 nodes in Guava are present. Find the number of leaves put together in all three plants?
In which crosses both phenotypic and genotypic F$_2$ ratios are 1:2:1?

I) Red $\times$ White snapdragon (incomplete dominance)
II) Tall $\times$ Dwarf garden pea
III) Dotted $\times$ Spotted seed coat lentil
IV) Homozygous $\times$ Heterozygous
Choose the incorrect statement among the following
Match the following
Choose the incorrect statements:

I. Electrons from NADH produced in the mitochondrial matrix are oxidized by complex II
II. Ubiquinones oxidised to ubiquinol by receiving reducing equivalents from complex I
III. Ubiquinol oxidized to ubiquinone by transfer of electrons to complex III
Match the following