Recent questions and answers in Biology

Assertion (A) : Induced mutations are widely used in crop improvement. Reasons (R) : Physical and chemical mutagens cause genetic variability in a population and produce only desirable characters.

answered May 7 by nazreensultana133

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Development of mesoderm in the form of muscles in body wall, leaving the alimentary canal non - muscular is the feature of :

answered Jan 25 by malathykumaran1979

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In Pyrus malus, the false fruit is formed from

answered Aug 15, 2022 by karan.lxv

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The palpiger of cockroach bear's :

answered Sep 19, 2021 by keerthangoud7636

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Identify the true statement in the following :

answered Aug 11, 2021 by swarnapravachhotray

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Fruits which break at maturity into number of pieces equal to the number of carpels are found in :

answered Jul 14, 2021 by suryaphanindra23

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Which event of the ' action potential ' is indicated by the letter (A) in the diagram ?

answered Jun 26, 2021 by vedikashinde2311

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The extension of pith between the vascular bundles, as seen in the transerse section of a young dicot stem is called :

answered Jun 2, 2021 by muhibuazizi

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In Benincasa the condition of androecium is described as :

answered May 5, 2021 by amitgugul1702

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In which of the following, the sepals, petals, stamens, carpels are in the ratio of 2 : 2 : 3 : 1

answered Apr 28, 2021 by shubham94272

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The position of the micropyle' found in an orthotropous ovule are turned down about $160^{\circ}$ ( degrees ) with reference to the funicle. In addition the ovule and embryo sac are curved. Such a type of ovule is called as

answered Mar 16, 2021 by akotireddi

1 answer

Select the animal from the examples given below which exhibits neoteny in its larval stage :

answered Feb 22, 2021 by saikumar

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Assertion (A) : In Fritillaria, the embryo sac is described as tetrasporic type. Reasons (R) : In Fritillaria, four megaspore mother cells are involved in the formation of an embryo sac.

answered Feb 12, 2021 by samyak1nikam

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Development of haploid plants from totipotent pollen is called

answered Nov 16, 2020 by npabhishek07

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The ratio of components of male flower of Smilax, female flower of Ruscus, modified reproductive shoots of Scilla and Tephrosia is :

answered Sep 24, 2020 by meghanadevarakonda05

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Assertion (A) : The energy requirement for the formation of one hexose molecule is more in Chlorella than in sugarcane. Reasons (R) : The formation of phosphoenol pyruvic acid from pyruvic acid requires two ATP molecules.

answered Sep 20, 2020 by anumularamkittu123

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How many zygospores are formed in a 100 - celled filament of spirogyra affinis if all cells are involved in conjugation ?

answered Jul 22, 2020 by smritilekhamukherjee2000

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The disease caused by the virus having double stranded nucleic acid with ribose sugar as genetic material is :

answered Jul 10, 2020 by akhilsam08

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In a plant physiology experiment a green plant kept in light was found releasing more units of $^{18}O_2$. Which of the following compounds would have been supplied to that plant ?

answered Jun 14, 2020 by omegajoy1234

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Malacophily is observed in the species of one of the following :

answered May 20, 2020 by viveka9581

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In the life cycle of Rhizopus the unicellular structure with diploid nuclei is :

answered May 3, 2020 by sweetyreachelteja

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What is the position of the multilayered sterile tissue in the transverse section of an young anther

answered May 3, 2020 by zaarafatima912

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Arrange the correct sequence of enzymes which act on food in different regions of alimentary canal :

answered Apr 19, 2020 by saranyasaranya8820

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Which of the following taxons is known for the absence of fruit ?

answered Apr 16, 2020 by hemarghs_1

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Which of the component of photosynthetic electron transport is directly involved in the transport of protons from stroma to lumen of thylakoid ?

answered Apr 10, 2020 by lokeshreddy20003

1 answer

Study the following table and identify the correct sequence of cells which shows the path of water movement between them :

answered Dec 21, 2019 by vijay02py

1 answer

In photosynthetic electron transport system, manganese ions are associated with

answered Nov 9, 2019 by bhavit711

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The drug used for deworming in poultry is :

answered Oct 27, 2019 by maheshkoppalbannikoppa

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The part of the chromosome beyond the secondary constriction is known as

answered Sep 17, 2019 by shubhadeepmishra.018

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Identify the correct sequence of the stages in the life cycle of Rhizopus after the reduction division of zygospore :

answered Sep 15, 2019 by bunnysanjana22

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An inflorescence which contains gall flowers is

answered Jul 14, 2019 by parimalas2019

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The unique anatomical character of cycas leaflet is in the presence of :

answered Jul 13, 2019 by khanmdtawish

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In Agaricus, during its development stages, the cells of the following, contains one nucleus

answered Jul 6, 2019 by binshanazar2017

1 answer

Protoplast lacks :

answered May 28, 2019 by kumariastha2k2

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Feathers can seen only in nestlings :

answered Mar 25, 2019 by banohanifa87

1 answer

The area where wild populations traditional lifestyles and genetic resources as protected is :

answered Mar 11, 2019 by konicanongmaithem9

1 answer

The cyst wall of Euglena is made tip

answered Feb 21, 2019 by hosni7002

1 answer

The microelement required for the synthesis of IAA is represented in its ionic form as a cofactor in this enzyme :

answered Feb 16, 2019 by riyaahmed7864

1 answer

Endodermis is a part of :

answered Jan 22, 2019 by reetikraj67

1 answer

in f2 genaration 960 garden pea pods are produced during dihybrid cross due to self pollination of heterozygous parents howmany pods would begreen and inflated

answered Jan 21, 2019 by purushottamtiwari215

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An aquatic plant which has spongy breathing roots is :

answered Dec 17, 2018 by sudipapaulcp

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Salicornia is an example of :

answered Nov 30, 2018 by indranikondepudi

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Sleeping movements in Samanea saman leaves are regulated by

answered Nov 5, 2018 by laytayib

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An example of physiological xerophyte is :

answered Oct 31, 2018 by sumitworld.2000

1 answer

" M " cells ( Mesoblast cells ) play an important role in the development of which body cavity :

answered Oct 30, 2018 by kavita.studyandscore

1 answer

In birds, Foramen triosseum is present at the junction of

answered Oct 28, 2018 by jay15052000

2 answers

Spermatophores in earthworm are formed by the secretion of the glands :

answered Oct 17, 2018 by sangeethavani510

1 answer

If there are 135 hydrogen bonds between two strands of a fragment of DNA double helix which contains 23 Guanine nitrogen basis, what is its total length ?

answered Jul 24, 2018 by rohansirsewad13

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The virus which causes ring spot disease in cherry is transmitted through

answered Jul 23, 2018 by pallapothukoteswarao

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The organism which lives as an endosymbiont in Barley is

answered Apr 27, 2018 by vaishteku16

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