PART - 2 - Unit IV : CH - 11 Photosynthesis in Higher Plants — BIOLOGY STD 11 Science — Question

Given below are the abnormal conditions related to blood circulation. Name the disorders.

1. Acute chest pain due to failure of oxygen supply to heart muscles.
2. Increased systolic pressure.

How many new cells can be produced per hour in the root apical meristem of maize?

Wall thickenings are uneven in which tissues?

Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to: Inhibit seed germination.

While examining the mitotic stage in a tissue. One finds some cells with 16 chromosomes and some with 32 chromosomes. What possible reasons could you assign to this difference in chromosome number? Do you think that cells with 16 chromosomes number could have arisen from cells with 32 chromosomes or vice-versa?

What is phyllotaxy? Name the type or phyllotaxy found (i) Mustard, (ii) Alstonia and (iii) Calotropis.

Differentiate family-Solanaceae and Liliaceae SD on the basis of gynoecium.

Name the endocrine gland which secretes the largest number of hormones.

Name the proteins of the thin filaments of a sarcomere.

Where are synaptic vesicles located in a neuron? What do they contain?