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Which of the following is an incorrect statement?

  1. A
    The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm
  2. B
    Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm
  3. C
    Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles
  4. D
    Microbodies are present both in plant and animal cells

Solution & Step-by-step Explanation

1. Perinuclear space () indeed acts as a barrier.2. Nuclear pores allow bidirectional movement of RNA and proteins.3. Incorrect statement: Mature sieve tube elements lack a nucleus and many organelles to facilitate efficient transport of food. They depend on the nucleus of adjacent companion cells.4. Microbodies (peroxisomes, glyoxysomes) are found in both plants and animals.

Practice this question

Try it yourself before checking the explanation above.

Which of the following is an incorrect statement?
A
The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm
B
Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm
C
Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles
D
Microbodies are present both in plant and animal cells

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