MCQ
Nucleus is enclosed in
- ADouble and non-porous layer
- ✓Double and porous layer
- CSingle and non-porous layer
- DSingle and porous layer
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$(A)$ Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group.
$(B)$ A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.
Select the correct option.
$(a)$ In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
$(b)$ Conjoint closed vascular bundles do not possess cambium
$(c)$ In open vascular bundles, cambium is present in between xylem and phloem
$(d)$ The vascular bundles of dicotyledonous stem possess endarch protoxylem
$(e)$ In monocotyledonous root, usually there are more than six xylem bundles present.
Choose the correct answer from the options given below: