NEET 2022 Question Paper Mock Test

Given below are two statements:Statement I: Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance.Statement II: Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height.In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements:Statement I: Decomposition is a process in which the detritus is degraded into simpler substances by microbes.Statement II: Decomposition is faster if the detritus is rich in lignin and chitin.In the light of the above statements, choose the correct answer from the options given below:

Read the following statements and choose the set of correct statements:(a) Euchromatin is loosely packed chromatin(b) Heterochromatin is transcriptionally active(c) Histone octamer is wrapped by negatively charged DNA in nucleosome(d) Histones are rich in lysine and arginine.(e) A typical nucleosome contains $400$ bp of DNA helixChoose the correct answer from the options given below:

Which one of the following plants shows vexillary aestivation and diadelphous stamens?

In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to:(a) Secretion of secondary metabolites and their deposition in the lumen of vessels.(b) Deposition of organic compounds like tannins and resins in the central layers of the stem.(c) Deposition of suberin and aromatic substances in the outer layer of the stem.(d) Deposition of tannins, gum, resin and aromatic substances in the peripheral layers of the stem.(e) Presence of parenchyma cells, functionally active xylem elements and essential oils.Choose the correct answer from the options given below: