Read the following statement and answer the questions that follows:
"A guava fruit has 200 viable seeds.".
a) What are viable seeds?
b) Write the total number of:
i) Pollen grains , ii) Gametes in producing 200 viable guava seeds.
c) Prepare a flow-chart to depict the post-pollination events leading to viablle-seed production in a flowering plant.

Read the statement and answer the questions that follow: A flower of brinjal has 520 ovules in its ovary. However, it produces a fruit with only 480 viable seeds. a) Describe the development of a dicot embryoy in a viable seed b) Why certain angiospermic seeds are albuminous while others are exalbuminous? Explain.

Read the following text and answer the following questions on the basis of the same : Class X students of a secondary school in Krishnagar have been allotted a rectangular plot of a land for gardening activity. Saplings of Gulmohar are planted on the boundary at distance of 1 m from each other in the fig. The students are to sow seeds of flowering plants on the remaining area of the plot. What are the coordinates of A ?

Read the following text and answer the following questions on the basis of the same : Class X students of a secondary school in Krishnagar have been allotted a rectangular plot of a land for gardening activity. Saplings of Gulmohar are planted on the boundary at distance of 1 m from each other in the fig. The students are to sow seeds of flowering plants on the remaining area of the plot. What are the coordinates of P ?

Read the following text and answer the following questions on the basis of the same : Class X students of a secondary school in Krishnagar have been allotted a rectangular plot of a land for gardening activity. Saplings of Gulmohar are planted on the boundary at distance of 1 m from each other in the fig. The students are to sow seeds of flowering plants on the remaining area of the plot. What are the coordinates of R ?

Read the following text and answer the following questions on the basis of the same : Class X students of a secondary school in Krishnagar have been allotted a rectangular plot of a land for gardening activity. Saplings of Gulmohar are planted on the boundary at distance of 1 m from each other in the fig. The students are to sow seeds of flowering plants on the remaining area of the plot. What are the coordinate of P if D is taken as the origin ?

Read the following text and answer the following questions on the basis of the same : Class X students of a secondary school in Krishnagar have been allotted a rectangular plot of a land for gardening activity. Saplings of Gulmohar are planted on the boundary at distance of 1 m from each other in the fig. The students are to sow seeds of flowering plants on the remaining area of the plot. What are the coordinated of D ?

Read the following statements and select the correct option. Statement 1 : Plants need the help of insects and animals for pollinating their flowers and dispersing their seeds. Statement 2: Plants offer rewards in the form of pollen and nectar for pollinators and juicy and nutritious fruits for seed dispersers.