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The adaptation of hind limbs in Aves includes modifications for all of the following EXCEPT:
The NCERT text states: 'The hind limbs generally have scales and are modified for walking, swimming or clasping the tree branches.' Forelimbs are modified for flying, not hind limbs.
Which of these classifications places Aves under Tetrapoda?
NCERT states: 'Classes, Amphibia, Reptilia, Aves and Mammalia have two pairs of limbs and are thus grouped under Tetrapoda.' This indicates their grouping based on the presence of four limbs.
Which of the following describes the vascular bundles in a monocotyledonous stem?
According to the NCERT text, 'The monocot stem has a large number of scattered vascular bundles... Vascular bundles are conjoint and closed.' Conjoint means xylem and phloem are along the same radius, and closed indicates the absence of cambium.
What is a characteristic feature of the hypodermis in a monocotyledonous stem?
The NCERT states, 'The monocot stem has a sclerenchymatous hypodermis.' Sclerenchyma provides mechanical strength.
Which type of ground tissue organization is characteristic of a monocotyledonous stem?
The text describes 'a large, conspicuous parenchymatous ground tissue' in monocot stems. This implies a less differentiated ground tissue compared to dicot stems.
Which of the following is absent in the phloem of monocotyledonous stems?
The NCERT states, 'The phloem parenchyma is absent' in monocotyledonous stems.
What is the relative size of peripheral vascular bundles compared to centrally located ones in a monocotyledonous stem?
According to the NCERT, 'Peripheral vascular bundles are generally smaller than the centrally located ones' in monocot stems.
What is present within the vascular bundles of a monocotyledonous stem that helps in water balance?
The text mentions, 'water-containing cavities are present within the vascular bundles' of monocot stems, which are involved in water storage or transport.
In monocotyledonous stems, what surrounds each vascular bundle?
The NCERT states that in a monocot stem, each vascular bundle is 'surrounded by a sclerenchymatous bundle sheath'.
Which of the following features indicates a stem is monocotyledonous rather than dicotyledonous upon observing its transverse section?
The characteristic feature of a monocot stem mentioned in the NCERT is 'a large number of scattered vascular bundles', whereas dicot stems have vascular bundles 'arranged in a ring'.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.