MCQ
Vascular bundle is closed, when
- ACambium present
- ✓Cambium absent
- CPericycle absent
- DNone of these
✓
Answer
Correct option: B.
Cambium absent
b
(b) When cambium is absent between xylem and phloem, it is said to be closed type.
(b) When cambium is absent between xylem and phloem, it is said to be closed type.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Select the wrong statements
Which of the following doesn't have any membranous covering:
In the bacterial photosynthesis, hydrogen donor is
The diagram shows an important concept in the genetic implication of $DNA$. Fill in the blanks $A$ to $C$.
→Choose incorrect statement
Select the correct statement from the following :
In plants, the tonoplast facilitates the transport of a number of ions and other materials
In biotechnological studies, the alga that is exploited as a rich source of protein is
Which one of the following statements are correct ?
(i) Turn over of biomolecules means that biomolecules are constantly being changed into some other biomolecules and also made from other biomolecules.
(ii) Together all the chemical reactions involving breaking and making, taking place in organism is called as metabolism.
(iii) The proteins without catalytic power are named as enzymes.
(iv) Metabolic pathways that lead to a less complex structure from a simpler structure are called as anabolic pathway.
(v) Metabolic pathways that lead to simpler structure from a complex structure are called as catabolic pathway.
(vi) The metabolic pathway from glucose to pyruvate occurs in 10 metabolic steps and process is called glycolysis.
(vii) The most important form of energy currency in living systems is the bond energy in a chemical called GTP.
(viii) The blood concentration of glucose in a normal healthy individual is 3.5-4.0mM.
(ix) The living state is a equilibrium steady state to be able to perform work.
(x) Almost all enzymes are protein but there are some nucleic acid that behave like enzymes and are called ribozyme.
(xi) Rate of reaction refers to the amount of product formed per unit time and is expressed as dP/dt.
(xii) A general rule of thumb is that rate doubles or decreases by half for every $10^{\circ}$ change in either direction.
Choose the correct option given below:
→(i) Turn over of biomolecules means that biomolecules are constantly being changed into some other biomolecules and also made from other biomolecules.
(ii) Together all the chemical reactions involving breaking and making, taking place in organism is called as metabolism.
(iii) The proteins without catalytic power are named as enzymes.
(iv) Metabolic pathways that lead to a less complex structure from a simpler structure are called as anabolic pathway.
(v) Metabolic pathways that lead to simpler structure from a complex structure are called as catabolic pathway.
(vi) The metabolic pathway from glucose to pyruvate occurs in 10 metabolic steps and process is called glycolysis.
(vii) The most important form of energy currency in living systems is the bond energy in a chemical called GTP.
(viii) The blood concentration of glucose in a normal healthy individual is 3.5-4.0mM.
(ix) The living state is a equilibrium steady state to be able to perform work.
(x) Almost all enzymes are protein but there are some nucleic acid that behave like enzymes and are called ribozyme.
(xi) Rate of reaction refers to the amount of product formed per unit time and is expressed as dP/dt.
(xii) A general rule of thumb is that rate doubles or decreases by half for every $10^{\circ}$ change in either direction.
Choose the correct option given below:
Select the incorrect match w.r.t. interspecific interaction
→species $A$ $\quad\;$species $B$ $\quad$interaction