Question

Q.1. Make a temporary stained squash preparation of onion root tip. Identify, sketch and label any one
stage of mitosis. Show your preparation to the examiner.
OR
Dissect the given flower and display different whorls. Take a T.S. of ovary to show number of
chambers. Sketch and label the diagram.
Q.2. Make a temporary preparation to show pollen germination. Draw neat and labelled diagram of
the same.
(3)​

Answer 1

Answer:

Explanation:

Introduction

A modified shoot meant for reproduction is called flower. A flower consists of receptacle on which

its four whorls are born. These are calyx, corolla, androecium and gynoecium.

A. Study the following terminology.

i. Bracteolate: flower with bracteoles

ii. Bracteoles: leaf like appendage in the axil of a flower

iii. Bract: leaf like appendage at the base of the flower

iv. Ebracteate: flower without bract

v. Bracteate:flower bearing bract.

vi. Sessile flower: flower without stalk

Stigma

Style

Ovary

Petal

Sepal

Thalamus