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Which of the following is an example of passive immunity?

Primary and secondary growth are inhibited by

The double helical model of DNA was first constructed by:

Choose the correct sequence of nerves in the spinal cord.

"The economies of China, India and Pakistan differ in terms of sectoral growth." Comment.

(a) Why did Hershey and Chase use radioactive P32 and S35 in their experiments? Explain.

(b) Following the experiments conducted by them, write what conclusion did they arrive at and how. [5 marks]

British had no interest in developing India. Give reasons.

Which is not a mammal?

NADPH is produced in photosynthesis during

why do many plants supply sweet nectors to keep bringing their pollenated back to them ? what is the use of it ?

Is umbellate inflorescence within racemose or cymose inflorescence or its a separate type?

Members of the class Reptilia are–

Which one of the following correctly matches a sexually transmitted disease with its pathogen?

In which of the following pairs of resonating structures first resonating structure is more stable than second?

In yeast.Alanyl T RNA , the number of nucleotides are?

A) 77

B)77pairs

C)88

D) 88only

Plant succession occurring on a sandy area is

Which of the following is not possible when the pneumotaxic centre is sending a strong signal?

Which of the following is/are grouped under phanerogams?

What do you call fruits arising out of multiple ovaries of a single flower?

The cell organelle participating in photo-respiration is

In a test cross involving $F_1$ dihybrid flies, more parental type offspring were produced than recombinant type offspring, this indicates

Match the columns and find out the correct combination

$\begin{array}{cccc}& \text{I}& & \text{II}\\ \text{(a)}& \text{Bulliform cells}& \text{(i)}& \text{Lenticels}\\ \text{(b)}& \text{Guard cells}& \text{(ii)}& \text{Isobilateral leaf}\\ \text{(c)}& \text{Epithem}& \text{(iii)}& \text{Stomata}\\ \text{(d)}& \text{Complementary cells}& \text{(iv)}& \text{Hydathodes}\\ & & \text{(v)}& \text{Phellem}\end{array}$

13. Explain the term thecodont and diphyodont.

Match the following columns.
$\begin{array}{cc}ColumnI& ColumnII\\ A.\text{Glycosurea}& 1.Accumulationofuricacidinjoints\\ B.\text{Renal~cakculi}& 2.Inflammationinglomeruli\\ C.\text{Glomerular~nephritis}& 3.Massofcrystallisedsaltswithinthekidney\\ D.\text{Gout}& 4.PresenceofGlucoseinurine\end{array}\left(a\right)\begin{array}{cccc}A& B& C& D\\ 1& 3& 2& 4\end{array}\left(b\right)\begin{array}{cccc}A& B& C& D\\ 3& 2& 4& 1\end{array}\left(c\right)\begin{array}{cccc}A& B& C& D\\ 4& 3& 2& 1\end{array}\left(d\right)\begin{array}{cccc}A& B& C& D\\ 4& 2& 3& 1\end{array}$

Periderm is produced from

How have the terrestrial organisms adapted themselves for conservation of water?

Green house crops such as tomatoes and bell pepper produce higher yields. This is due to

A person with blood group AB has

Consider the following statements

Which of the above statements is/ are correct :

Match the classes of carbohydrates given in column I with the examples listed in column II and choose the right answer indicating the correct combination of alphabets of the two columns.

$\begin{array}{cccc}& \text{Column I}& & \text{Column I}\\ & \text{Class of Carbohydrates}& & \text{Examples}\\ A& \text{Monosaccharides}& e& \text{Fructose}\\ B& \text{Oligosaccharides}& f& \text{Gluconic acid}\\ C& \text{Polysaccharides}& g& \text{Pectin}\\ & & h& \text{Lactose}\end{array}$