Biology for ( Grade 10 )

Pons varolii : it lies above the medulla oblongata. It controls some aspects of respiration. Medulla oblongata : It is the post ...

Gastric secretion Inhibits secretion Stimulates secretion Salivary glands Inhibits secretion of saliva Stimulates secretion Urin ...

tapped, quick closing of eyelid when an object suddenly comes in fort of eyes (corneal reflex) etc. (ii) Conditioned reflex : Th ...

Third ventricle occurs in (A) cerebrum (B) cerebellum (C) medulla oblongata (D) diencephalon The pineal body is considered as ...

controlled? What are the functions of the following endocrine glands? (i) Pancreas (ii) Thyroid (iii) Adrenal (iv) Ovaries (v) ...

Which hormone is responsible for the development of moustache and beard in men.[CBSE, 2004] What is the difference between se ...

life. 11.1 (a) Purpose of Reproduction : Reproduction is aimed sat multiplication and perpetuation (stability) of the species. I ...

cytoplasm into two parts, each with one nucleus. Finally two daughter cells are formed. e.g. Amoeba (B) Multiple fission : Somet ...

It is of following types : (A) Cutting : This is the very common method of vegetative propagation practised by the gardeners all ...

weeks adventitious roots develop from the injured part. The branch along with roots in then separated from the parent plant and ...

cheaper method of multiplication of plants. (D) By this method a good quality of a race or variety can be preservers. (E) Most o ...

(ii) It involves formation and fusion of gametes. (iii) Cell divisions are both meiotic & mitotic during gamete formation an ...

11.3 (a)A flower Consists of Following Parts : (i) Calyx: The sepals collectively are called as calyx. They are usually green in ...

(A) (B) (C) Fig. :(A) ventral view showing connective (B) dorsal view (C) t.s. of fanther showing pollen chambers (vi) Gynoecium ...

The transfer and deposition of pollen grains from the anther to the stigma of a flower is called as pollination. Types of polli ...

The transfer of pollen grains occurs through various ways, which may be biotic or abiotic. (i) Abiotic factors Technical terms ...

The process of pollination occurs, due to which the anther get stuck up to the stigma. After reaching to stigma pollen grains ...

Ovule change into seed and ovary wall change into fruit wall. FIG: SHOWING FERTILIZATION IN A FLOWER ...

DIFFERENCES BETWEEN SELF POLLINATION AND CROSS POLLINATION S.NO. SELF POLLINATION CROSS POLLINATION Pollen grains are transferr ...

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