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Biology · CELL THE UNIT OF LIFE

हिन्दी

Consider the following statements regarding the formulation of cell theory: (A) Matthias Schleiden concluded that the presence of cell wall is a unique character of plant cells. (B) Theodore Schwann studied different types of animal cells and observed a thin outer layer known as plasma membrane. (C) Schleiden and Schwann together formulated the cell theory but could not explain how new cells were formed. Which of the above statements are correct?

  1. (A) and (B) only
  2. (B) and (C) only
  3. (A), (B) and (C)
  4. (A) and (C) only

Correct answer · Option 2

(B) and (C) only

Explanation

Schwann concluded that the cell wall is unique to plant cells based on plant studies; Schleiden only observed that all plants are composed of cells forming tissues.

Related questions

In a diploid human somatic cell, approximately two metres of DNA is packaged within the nucleus into 46 chromosomes. What is the fundamental biochemical composition of interphase chromatin?→In plant cells, the tonoplast plays a crucial physiological role by facilitating the transport of a number of ions and other materials. What is the direction and nature of this transport relative to concentration gradients?→Given below are two statements:\n Statement I: The ribosomes of chloroplasts are 70S, which are smaller than the cytoplasmic 80S ribosomes of eukaryotic cells.\n Statement II: The inner membrane of the chloroplast is comparatively more permeable to solutes than its outer membrane. \nIn the light of the above statements, choose the most appropriate answer from the options given below:→Gas vacuoles are specialized non-membrane bound structures providing buoyancy. In which group of organisms are they found?→
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