Take one flower of family Fabaceae and write its essential description. Also draw their floral diagrams after studying them.

Explain why sexual reproduction in angiosperms is said to take place through double fertilization and triple fusion. Also draw a labelled diagram of embryo sac to explain the phenomena.

Study the below given periodic table in which four elements are indicated by alphabets A,B,C and D Identify element 'D' and wrtie its electronic configuration Also write the electronic configuration of the elements above and below 'D' in the same group

Answer the following questions The observations made by swarali while doing the experiment are given below. Based on these write answers to the questions: Swarali found that the light ray trvelling from the denser medium to a rarer medium goes away from the normal. If the angle of incidence (i) is raised by Swarali, the angle of refraction (r) went on increasing . However after certain value of the angle of incidence. the light ray is seen to return back into the denser medium Draw the diagram of three observations made by swarali.

Draw neat labelled diagram of various forms of bacteria and write about them.

Two long conductors, separated by a distance d carry current I_(1) and I_(2) in the same direction . They exert a force F on each other. Now the current in one of them is increased to two times and its direction is reversed . The distance is also increased to 3d . The new value of the force between them is

Draw a neat labelled diagram and write the characteristics of : One Thallophyta

Write given and to prove for the following statement, Also draw the diagram. "Vertically opposite angles are congruent."

Observe the following diagram and write the answers of the following question After completion of a period, what change does take place in the electronic configuration of the next element?

Answer the following questions: Observe the following diagram and write the answer the following questions: After completion of a period , what change does take place in the electronic configuration of the next element?

There are instructions written near the arrows in the following diagram. From this information form suitable equations and write in the boxes indicated by arrows. Select any two equations from these boxes and find their solutions. Also verify the solutions. By taking one pair of equations at a time, how many Pairs can he formed ? Discuss the solutions for these pairs.