Check question paper PDF of CBSE 12th Biology board exam 2021-22 (Term 1) along with the latest updates. One can download Term 1 CBSE 12th Biology question paper PDF from the link given at the end of this article. Jagran Josh has collected feedback from students along with the question paper. One can access updates from the link given below.
CBSE 12th Biology Board Exam 2021-22 (Term 1): Analysis, Review, Question Paper, Answer Key, Updates!
CBSE 12th Biology Board Exam 2021-22 (Term 1): Question Paper - Snapshot From Paper
CBSE 12th Biology Board Exam 2021-22 (Term 1): Questions From Question Paper
1. Enclosed within the integuments of a typical anatropous ovule is a diploid mass of cellular tissue known as:
(a) Megaspore mother cell
(b) Nucellus
(c) Synergids
(d) Embryo sac
2. Researchers the world over are trying to transfer apomictic genes to hybrid varieties as hybrid characters in the progeny:
(a) do not segregate
(b) Segregate
(d) develop genetic variations
(d) will remain unexpressed
3. The aquatic plant having long and ribbon like pollen grains is:
(a) Vallisneria
(b) Hydrilla
(c) Eicchornia
(d) Zostre
4. In a typical dicotyledonous embryo, the portion of embryonal axis above the level of cotyledons is:
(a) Plumule
(b) Coleoptile
(c) Epicotyl
(d) Hypocotyl
5. To overcome incompatible pollinations so as to get desired hybrids, a plant breeder must have the knowledge of
(a) pollen-nucellar interaction
(b) pollen-egs cell interaction
(c) pollen -pistil interaction
(d) pollen - embryo sac interaction
6. Pollen grains retain viability for months in plants belonging to different families given
below:
(i) Solanaceae
(ii) Leguminosae
(iii) Gramineae
(iv) Rosaceae
(v) Liliaceae
The correct option is:
(a) (b), (ii) and (v)
(b) (i), (ii) and (iv)
(c) (i), (iv) and (v)
(d) (i)(iii) and (v)
For all the questions, download the complete question paper from the link given below
