STD 12 - 1. sexual reproduction in flowering plants — NEET STD 11 Science — Question

A genetically dwarf plant can be converted into a tall plant by the use of

It is parasite plant.

Wind pollinated flower have long well exposed stigma. This statement is

In the flowers of a plant, the ovarian part is fused, but styles and stigmas are free. Its ovary becomes unilocular due to breakdown of partition wall and the ovules are attached to a central axis. Identify the plant.

Which of the following is true for viruses

In the given columns, match the column I and column II. Select the correct match from the option given below.

Column I	Column II
A. Growth	I. Increase in mass and increase in number of individuals
B. Metabolism	II. Sum total of all chemical reactions occurring in body
C. Herbarium	III. Preserved specimens on sheets become a store house for future use
D. Botanical garden	IV. Generally set up in garden educational institutes
E. Museum	V. Includes collection of living plants for reference
F. Species	VI. Basic unit of classification

A	B	C	D	E	F
(a) I	II	III	IV	V	VI
(b) I	II	III	V	IV	VI
(c) II	I	III	V	IV	VI
(d) I	II	IV	III	V	VI

Assertion: Potato, ginger, turmeric, zaminkand, Colocasia are modified underground stems to store food.
Reason: The stem bears nodes, internode and buds.

Which hormone is synthesized in root apices, developing shoot buds, young fruits?

Repulsion of homologous chromosomes takes place in