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

Which is an example of true pyramid in an ecosystem?

Which one of the following statements are correct ?
(i) Chromatids start moving towards opposite poles in anaphase.
(ii) Crossing over occurs between non-sister chromatids of homologous chromosomes.
(iii) Crossing over occurs in tetrad stage which occurs in pachytene of prophase I of meiosis I.
(iv) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.
(v) Crossing over is the reciprocal transfer of genes between the non-homologous chromosomes
(vi) M phase represents the phase when actual cell division occurs and I phase represents the phase between two successive M phase.
(vii) In the 24 hours, average duration of cell cycle of a human cell, cell division proper lasts for only about an hour.
(viii) M phase constitutes more than 95% of the duration of cell cycle.
Choose the correct option given below :-

First transgenic cow was developed in the year

Statement I: Palmitic acid has 16 carbons excluding carboxyl carbon.
Statement II: Arachidonic acid has 20 carbon atoms including carboxyl carbon.

Identify the incorrect pair.

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

Glycolysis is found in cytoplasm of virtually all types of aerobic/anaerobic cells. In this process, glucose is converted into a compound which is