What are cleistogamous flowers? Can cross-pollination occur in cleistogamo us flowers? Give reasons for you answer.

Can cross pollination occour in cleistogamous flowers?

When the pollen is transferred from anther to the stigma of the same flower, the pollination is called autogamy. Cleistogamous flowers are invariably autogamous. Explain.

State whether the 'or' used in the following statements is "exclusive" or "inclusive". Give reasons for your answer. To apply for a driving licence, you should have a ration card or a passport.

Using the data given below, state as to which of the given lenses will you prefer to use as (i) an eye-piece and (ii) an objective to construct an astronomical telescope? Give reason for your answer.

State whether the 'or' used in the following statements is "exclusive" or "inclusive".Give reasons for your answer. All integers are positive or negative.

State whether the or used in the following statements is "exclusive" or "inclusive". give reasons for your answer. A rectangle is a quadrilateral or a pentagon.

State whether the 'or' used in the following statements is "exclusive" or "inclusive".Give reasons for your answer.Sun rises or moon sets

State whether the or used in the following statements is "exclusive" or "inclusive". give reasons for your answer. A square is a polygon or a parallelogram.

For each of the following statements ,determine whether an inclusive "OR" or exclusive "OR" is use.Give reasons for your answer(ii)The school is closed if it is a holiday or a Sunday.

For each of the following statements ,determine whether an inclusive "OR" or exclusive "OR" is use.Give reasons for your answer(i)All integers are positive or negative.