Zigya Logo

Chapter Chosen

Plant Growth and Development

Book Chosen

Biology

Subject Chosen

Biology

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12
What would be expected to happen if :

(a) GA3 is applied to rice seedlings.

(b) Dividing cells stop differentiating.

(c) A rotten fruit gets mixed with urripe fruits.

(d) You forget to add cytokinin to the culture medium


(a) The elongation of stem will occur at fast rate.

(b) An undifferentiated mass of cells is formed.

(c) The unripe fruits will ripen quickly.

(d) There will be no differentiation of shoot buds.

184 Views

Who coined the term gibberellin ?

Yabuta.
832 Views

 Term kinetinwas coined by whom ?

Skoog and Miller.
1034 Views

Who isolated auxin and from where ?

Auxin was isolated by F.W. Went from tips of coleoptiles of oat seedling.

1309 Views

What is C/N ratio ?

C/N ratio is the ratio of carbohydrates and nitrogenous compounds which regulate the growth in plants. 
633 Views

 Give the types of auxins.

Auxins are of two types :

(1) Natural auxins : These are naturally occuring auxins, isolated from plants and are regarded as phytohormones e.g. IAA. NAA etc.

(2) Synthetic auxins : These are synthesized by artificially e.g. IBA 2,4-D etc.

685 Views