STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

Seedless fruits can be obtained by treating a plant with

Which of the following statements are incorrect ?
(i) Watson and Crick along with Wilkins and Franklin got the Nobel Prize for his work in 1962.
(ii) In RNA, every nucleotide residue has an additional-OH group present at 3'-position in the ribose.
(iii) 5-methyl uracil is an another chemical name for Thymine.
(iv) DNA as an acidic substance present in nucleus was first identified by Friedrich Meischer in 1869 and called it "Nuclein".
(v) In 1953 Watson and Crick, proposed double helix model for the structure of DNA.
(vi) Watson and Crick model is based on the X-ray diffraction data produced by Wilkins and Franklin.
(vii) According to Chargaff the ratio between Adenine and Guanine, Thymine and Cytosine are constant and equals to 1.

A mature sieve tube differs from vessel in

Read the following statements :
(i) All events-from pollen deposition on the stigma until pollen tubes enter the ovule-are together referred to as pollen-pistil interaction.
(ii) Pollen-pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen.
(iii) Artificial hybridisation is achieved by emasculation and bagging techniques.
(iv) Removal of anthers from the flower bud before the anther dehisces referred to as bagging.
(v) Since two types of fusions, syngamy and triple fusion take place in an embryo sac the phenomenon is termed double fertilisation.
Of above statements which one is correct ?

Cellulose are polymers of

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: ATP is used at two steps in glycolysis.
Reason R: First ATP is used in conversion of fructose-6-phosphate into fructose-1, 6 disphosphate and second is used in converting glucose into glucose-6-phosphate.
Choose the correct answer from the options given below

Microsporogenesis is a synonym for

Corolloid roots are found in

Mesosomes were taken as

Charles Darwin and Francis Darwin are related with