Ruchi collected four different kinds of seeds (W, X, Y and Z). The characteristic of each seed is given below. Identify the seeds and the agent of their dispersal and select the correct option.
W – Surrounded by tiny hair
X – Thick coat of fibres
Y – Presence of hooks or spines
Z – Enclosed in a fruit that bursts open when mature
|Seed||Agent of dispersal|
|A||W – Dandelion||Animals|
|B||X – Coconut||Water|
|C||Y – Xanthium||Air|
|D||Z – Cotton||Explosion|
Always walk on the __________ and cross the road at a __________ if there is one.
AZebra crossing, Footpath
BRoad, Zebra crossing
I did not understand
Clothes are made from __X__ which in turn is made from __Y__ . We get Y from __Z__.
|C||Fabric||Fibre||Plants and animals|
|D||Fibre||Fabric||Plants and animals|
Sakshi performed two experiments as shown in figure 1 and 2, and recorded her observations in the table.
Find out the correct observation and the reason behind it from the options given below.
AI, paper has a higher ignition temperature than water.
BII, fireproof paper pan is used in figure 2.
CIII, paper is non-inflammable.
DII, heat supplied to the paper pan is transferred to water by conduction, so ignition temperature of paper is not reached in figure 2.
i am suffusticated with this question