STD 11 - 1. The living world — NEET STD 11 Science — Question

Cycas has two cotyledons but is not included under angiosperms because it has

The pyramid of biomass and the pyramid of number represent

Fill in the blanks and choose the correct option given below.
(i) The plane of alignment of chromosome at metaphase is referred to as the A.
(ii) B stage of M-phase is characterised by splitting of centromeres and seperation of chromatids.
(iiI) Nuclear envelope assembles around chromosome cluster in C stage of M-phase.
(iv) During cytokinesis in plant cell, formation of cell plate occur that represent D between the walls of two adjacent cells.
(v) During E stage of Prophase I, chromosome start pairing together. This process of association is called F.
(vi) During zygotene stage, the complex formed by a pair of synapsed Homologous chromosome is called a_G_
(vii) Crossing over occur during H stage of Prophase I and is enzyme-mediated process and enzyme involved is called I.
(viii) The site of crossover is X-shaped structure called J in diplotene stage.
(ix) Mitosis is also called K whereas meiosis is called L.
(x) Number of daughter cell form after mitosis is M and after meiosis is N.
(xi) Crossing-over occurs between O chromatids of homologous chromosome.

Which of the following are plant growth promoters?

What type of pollination takes place in Vallisneria

In the bacterial photosynthesis, hydrogen donor is

Which one of the following statements cannot be connected to Predation?

Studies under karyotaxonomy are based upon

Crossing over takes place between which chromatids and in which stage of the cell cycle?

Separate the following correct pair.