This is a form of birth control used by women.

It is a diarrheal infection of the small intestine caused by Giardia lamblia. It is caused by the ingestion of infective cysts.

Chlamydia is a bacterial infection disease transmitted when people have sexual relations.

Syphilis is a sexually transmitted disease caused by bacteria. The highly infectious disease may also be passed through blood transfusions or from mother to her developing embryo in the womb.

It is a very contagious skin disease being caused by a mite, which is visible under only magnifying glass or under a microscope.

This foam contains a spermicide that kills sperm. It is applied into the vagina before the sex. The foam covers the folds in the vagina and forms a barrier between the sperm and the egg.

It is a form of birth control that is used by women. You get an injection of 'Depo' every 12 weeks to prevent pregnancy.

The angiosperm gametophytes are pollen and the eight-nucleus embryo sac.

Monoecious, dioecious, and dichogamous flowering arrangements are all means of promoting cross pollination.

Here the leaf is inversely heart-shaped being deeply notched at the top.

In an angiosperm, out of total four megaspores three gets degenerated leaving a single survivor.

Here the tip of the leaf is indented, with a shallow notch at the tip.

This leaf is shaped like an halberd and with the basal lobes pointing outward.

It is a simple fleshy fruit developing from syncarpous inferior ovary containing axile placentation. The most prominent examples are orange and lemon.

It is a simple, dry indehiscent fruit. The pericarp creates wings meant for dispersal. The most prominent examples are acer and dipterocarpus.

All of the given options favour cross pollination.

Here, the pericarp breaches longitudinally along the middle of each loculus into as many valves as there are carpels. The most prominent example is lady's finger.

In certain angiospermic herbaceous perennials, like banana and gladiolus, above the ground part of the shoot dies each year after flowering and fruiting, but the underground parts (stem and roots) survive and put out new shoots the next year.

It is a simple, dry dehiscent fruit originating from the syncarpous ovary having axile placentation. The most prominent example is datura.

It is the pollination done by bats. The prominent examples include Kigella pinnata (sausage tree), Adansonia (baobab tree) and Anthocephalus (kadamba tree).

Ageotropic remains unaffected by gravity. Tertiary roots are not affected by gravity so they are called ageotropic.

Here the plants flower in all possible photoperiods, ranging from a few hours to 24 hours of uninterrupted light exposure. They are also called photo neutrals or intermediate plants. The most prominent examples are tomatoes, cucumbers, sunflower, dandelions and cotton.

Tropic movements in response to the stimulus of chemicals is called chemotropic movements. The most prominent example can be seen in the growth of pollen tube by the virtue of the style towards the embryo sac.

This particular movement is observed in twiners and climbers. This results in curvature and helps in twinning around the support.

It is a simple, dry, indehiscent fruit originating from inferior, bicarpellary, syncarpous and monolocular ovary. The pericarp is lean and free from the seed coat. The most prominent example is Compositae family plants.