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Column A lists the cell parts and Column B lists the functions of the cell part. Column A Column B i. Cell wall A. Control what happens ii. Cell membrane B. Supports the cell. iii. Cytoplasm C. Controls what passes in and out of the cell. iv. Nucleus D. Cell reactions happen in it. Which one of the following options is correct?
I. All the offices on the 9th floor have wall-to-wall carpeting. II. No wall-to-wall carpeting is pink. III.None of the offices on the 9th floor has pink wall-to-wall carpeting. If the first two statements are true, the third statement is
If the first two statements are true, the third statement is :
I. All the offices on the 9th floor have wall-to-wall carpeting.
II. No wall-to-wall carpeting is pink.
III. None of the offices on the 9th floor has pink wall-to-wall carpeting.
Which of the following statements refers to the process of 'parthenogenesis'? 1. It is a natural form of asexual reproduction in which the growth and development of embryos occur without fertilisation. 2. It is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. 3. It is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg inside of the female's body  Select the correct answer using the codes given below.
The main reinforcement in the toe of a T-shaped R.C. retaining wall is provided on
i) top face parallel to the wall
ii) top face perpendicular to the wall
iii) bottom face parallel to the wall
iv) bottom face perpendicular to the wall
The correct answer is
Which is the function of cell wall?
1. Provides shape to the cell.
2. Protects the cell from mechanical damage and infection.
3. Helps in cell to cell interaction.
4. Provides barrier to undesirable macromolecules.
5. Imbibes water.
Nearly 55 percent of the total population of Bihar survive in absolute poverty because:
1. Bihar lacks in natural resources, both existing and potential.
2. Bihar has the fastest total fertility rate in India.
3. Bihar has very unfavourable agro-climatic conditions.
4. Bihar lacks in quality infrastructure and businessfriendly environment.
Which of these reasons are correct?
The following table depicts the presence or absence of certain cell organelles in three cells A, B, C. What could A, B, C be? Part of a cell A B C Cytoplasm \(\surd\) \(\surd\) \(\surd\) Nucleus \(\surd\) \(\surd\) \(\surd\) Cell wall \(\surd\) x \(\surd\) Cell membrane \(\surd\) \(\surd\) \(\surd\) Chloroplast \(\surd\) x x
Which of the following statement is correct about cells? I. Cell membrane is absent in plant cell Il. Cell wall is present in animal cell
A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?