Which of the following statement is true of Hydra?

Which of the following statements true of date plam?

Spermatids are transformed into spermatozoa by

Study of pollen grain is called

vegitative propagation in mint occurs by 

Offsprings formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because:

There are various types of reproduction. The type of reproduction adopted by an organism depends on:

Which of the following is a post-fertilisation event in flowering plants?

Which one of the following processes results in the formation of clone of bacteria?

Which one of the following is common to multicellular fungi, filaments algea and protonema of mosses?

Why are male gametes produced in thousands, while female gametes are few?

Name the carrier of male gametes in seed-plants.

What is clone?

Select the organism which reproduces by binary fission: Amoeba, Hydra, Penicillium, Paramecium, Paramecium, Sponge.

Name the phase all organism have to pass through before they can reproduce sexually

The cell division involved in gamete formation is not of the same type in different organisms.  Justify.

A list of three flowering plants is given below.  Which ones out of them are 
(i) monoecious and
(ii) bearing pistillate flowers? Date palm, Cucurbits and Pea.

A haploid organism produces gametes by mitosis.  Does it mean that meiosis never occurs in such organisms? Justify your answer.

Why offsprings of oviparous animals are at greater risk for survival?

List different ways of asexual reproduction.

How does yeast reproduce asexually?  Show it diagrammatically.

Describe the process of sporulation seen in Amoeba.

Differentiate between external fertilisation and internal fertilisation with an example for each.

Differentiate between oviparous and viviparous animals with an example of each.

Gametes are never formed by meiosis in haploid individuals. Is meiosis absent or present in haploid organisms? If present then when does it occur?

(a) Name two animals showing external fertilisation.  Why are move gametes produced by such animals?
(b) Name two animals showing internal fertilisation.  What are the characteristics of the gametes produced by such aimals?

Jagan has two mango trees in the backyard  of his house, which yielded fruits for the first time during this summer.  The fruits were small, fibrous and not so sweet.  In the next house, where his friend Ajay livers, there is a mango tree, which yields fruits that are fleshy/juicy, very sweet and bigger in size.  Ajay, a student of B.sc. (Botany) comes out with an idea and takes some branches from the jagan's garden to his garden and explains the procedure.
(a) What method do you think Ajay has suggested for getting good quality fruits, on the trees of Jagan's house in a short period of time, i.e. during the next season?
(b) Describe how it is carried out to help japan.
(c) What are its advantages over growing a mango tree with the seeds obtained from Ajay's garden?
(d) Mention the values expressed by Ajay in this case.