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Question 27.01:

1)What are the structural characteristics of meristematic cells near root tip?

2)What are the structural characteristics of the cells in the elongation zone of the root?

Do annelids regenerate ?

In DNA of certain organisms, guanine constitutes $20\%$ of the bases. What percentage of the bases would be adenine?

Which method out of the following renders the seed coat permeable to water so that embryo expansion is not physically retarded?

PCT is responsible for

Which of the following is not a function of the conducting zone of the respiratory system?

Match the following:
$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ \text{i. Ethmoid}& \text{a. are situated at the sides and base of the skull}\\ \text{ii. Sphenoid}& \text{b. contains the large opening of the foramen magnum}\\ \text{iii. Frontal}& \text{c. situated on the sides and the roof of the skull}\\ \text{iv. Parietal}& \text{d. forms the forehead.}\\ \text{v. Temporal}& \text{e. is found in the nasal septum}\\ \text{vi.Occipital}& \text{f. houses the optic canal}\end{array}$

What kind of vascular bundles is depicted in the diagram below? Consider that blue color denotes xylem and red denotes phloem.

Each part of the body takes part in the process of respiration incase of:

The position of cambium ring at the time of its origin in a dicot root is:

In cell fluid, the most abundant cation is :

The phenotype of $F_1$ progeny, when pure tall and dwarf plants are crossed together is _________.

The hereditary principle derived from the results showing new combinations in addition to parental combinations in $F_2$ generation is

In the core area (or zone) of a National Park/Tiger Reserve

In the following question, a statement of assertion is following by a statement of reason. Mark the correct choice as:
Assertion: CAM plants lack structural compartmentation of a leaf as found in $C_4$ plants.
Reason: Stomata of CAM plants are open during the day.

Which of the following is not a connective tissue?

There are eight jobs each of which is to be processed through two machines A and B in the order AB. Processing times in hours are given in table:





What is the optimum sequence for minimizing the total elapsed time?

Epithelial tissue is distinguished from connective tissue, muscular, or nervous tissue by its_____

Natural breeding is selected animals picked for their special traits are made to live together in enclosures, and breed naturally.

Which class of drugs share common structural features and often have similar pharmacological activity?

How does the mesophyll differ in the dicot and the monocot leaf?

Which of the following B group vitamins can be stored in our body?
(a) $Vitamin{B}_1$ (b) Vitamin $B_2$ (c) Vitamin $B_6$ (d) Vitamin $B_{12}$

Match the disorders of the4 human nervouis system listed in column I with the attributes/symptoms mentioned in column II and choose the right answer containing the correct matching of the alphabets of the two columns.

$\begin{array}{cccc}& \text{Column -I Disorders}& & \text{Column - II Attributes / Symptoms}\\ A& \text{Epilepsy}& e& \text{Partial or complete loss of sensation in one or more parts of the body}\\ B& \text{Parkinson's disease}& f& \text{Amyloid plaques}\\ C& \text{Alzheimer's disease}& g& \text{Tremling of limbs}\\ & & h& \text{Convulsive seizures, loss of consciousness, and falling to the ground}\end{array}$

Which part of the tooth has got no nerve endings?

Which one of the following belongs to Platyhelminthes(flatworms)?

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