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
Would you expect soyabean plants to flower, if given a daily exposure of 15 hours ? Give reasons

Soyabean plants are short day plants which initiate flowering when the day length becomes shorter than a critical length. They remain vegetative if day length is in excess of the critical duration of light. Therefore, soyabean plants will not flower if given a daily exposure of 15 hours.
121 Views

 Term kinetinwas coined by whom ?

Skoog and Miller.
1034 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

What is C/N ratio ?

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

Who coined the term gibberellin ?

Yabuta.
832 Views

Who isolated auxin and from where ?

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

1309 Views