Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
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'.
The absence of cambium in the vascular bundles of monocotyledons results in them being referred to as which type of vascular bundle?
The NCERT states, 'In the monocotyledons, the vascular bundles have no cambium present in them. Hence, since they do not form secondary tissues they are referred to as closed.'
Which of the following describes the general pattern of species diversity from the equator towards the poles?
The NCERT text states: 'In general, species diversity decreases as we move away from the equator towards the poles.' This is the definition of the latitudinal gradient in biodiversity.
Globally, tropics are defined by which latitudinal range?
The NCERT text specifies: 'tropics (latitudinal range of 23.5° N to 23.5° S) harbour more species than temperate or polar areas.'
Which of the following countries is cited as an example of high bird diversity due to its proximity to the equator?
The text states: 'Colombia located near the equator has nearly 1,400 species of birds while New York at 41° N has 105 species and Greenland at 71° N only 56 species.'
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.