Leaf parts modified to spines in order to

Consider the following morphological biochemical or physiological characteristics of plants.

$\mathrm{i}.$ Presence of hairy leaves $\mathrm{ii}$$.$ Production of more nectar is flower
$\mathrm{iii}.$. High sugar content in plant parts $\mathrm{iv}.$ Presence of higher aspartic acid concentration.

Choose the correct combination of statements which give natural resistance to plants against insect pests:

Differentiate between stipule and bract.

You have heard about several insectivorous plants that feed on insects. Nepenthes or the pitcher plant is one such example, which usually grows in shallow water or in marsh lands. What part of the plant is modified into a 'pitcher'? How does this modification help the plant for food even though it can photosynthesize like any other green plant?

Check whether the following question is true or false. If false, give the correct statement.

Leaves of Aloe Vera are fleshy and store water.

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$