STD 11 - 5. Morphology flowering plants — NEET STD 11 Science — Question

Altitude sickness which includes nausea, fatigue and heart palpitations occurs due to

The outermost primary meristem gives rise to

The condition where a pteriodophyte produces two kinds of spores and sporangia is termed as

In Yeast the sexual reproduction is by conjugation. After fusion the zygotic nucleus divides meiotically and forms haploid spores. The unicellular structure with haploid spores is

.............pollination is quite common in grasses

The types of flowers which always produce seeds even in the absence of pollinators

If all the ribosomes of a cell are destroyed

Which of the following statements are correct from given statement ?
(i) Glucose is the favoured substrate for respiration. All carbohydrates are usually first converted into glucose before they are used for respiration.
(ii) Other substrates like fats, proteins can also be respired but they do not enter the respiratory pathway at the first step.
(iii) If fatty acids were to be respired they would first be degraded to acetyl CoA and enter the pathway.
(iv) Glycerol would enter the pathway after being converted to PGAL.
(v) The proteins would be degraded by proteases and the individual amino acids and it enter the pathway at some stage within the Krebs' cycle or even as pyruvate or acetyl CoA.
(vi) Because the respiratory pathway is involved in both anabolism and catabolism it consider as an amphibolic pathway rather than as a catabolic one.

Phylogeny tells about

Select one of the following of important features distinguising Gnetum from Cycas and Pinus and showing: