STD 11 - 11. photosynthesis in higher plants — NEET STD 11 Science — Question

The tip of the root apical meristem is proceeded by root pocket in

How many characters for lichens are correct from given characters?
i. Lichens are symbiotic associations.
ii. It is an association between algae and fungi.
iii. The algal component is known as mycobiont. 
iv. The fungal component as phycobiont.
v. Lichens are very good pollution indicators.

The science of naming the plant is known as

The thallus of Volvox is called

Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation :

Leaves of dicotyledon plants generally exhibits

Mark the given statements True (T) or False (F).
(i) Any sexually reproducing organism starts its life cycle from a single-celled zygote.
(ii) The stages through which a cell passed from one division to the next is called cell cycle.
(iii) Yeast progresses through the cell cycle in 190 minute.
(iv) The cell cycle is divided into two phase interphase and M-Phase.
(v) Nuclear division is known as karyokinesis while cytoplasm division is known as cytokinesis.
(vi) In cell cycle, the resting phase during which cell is preparing for cell division is called interphase.
(vii) G₂ phase of M-phase is period when cell grows and carries out normal metabolism.
(viii) During S phase of interphase, amount of DNA per cell doubles.
(ix) If the cell has 2n number of chromosome at G₁ then number of chromosome after S phase will be 4n.
(x) G₀ phase of cell cycle is called quiescent stage.
(xi) During prophase phase of M-phase of cell cycle, duplicated centriole begins to move towards metaphase plate.
(xii) Kinetochores structure on surface of centromere serve as the sites of attachment of spindle fibres to the chromosome.
Choose the correct option given below :-

Which one is false about kranz anatomy

Zeatin has been obtained from

Reserpine is obtained from