Download App

STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 13. Plant growth and development4 Marks
MCQ
During differentiation of tracheary elements
  • A
    The cells lose its protoplasm
  • B
    Cells develop very strong elastic lignocellulosic secondary cell walls
  • ✓
    Both $(a)$ and $(b)$
  • D
    The cell increases its protoplasm
✓

Answer

Correct option: C.
Both $(a)$ and $(b)$
c
During differentiation, cells undergoes few to major structural changes both in their cell wall and protoplasm. For example, to form tracheary elements, the cells would loose their protoplasm. They also develop a very strong, elastic, lignocellulosic secondary cell walls to carry water to long distances even under extreme tension

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following statements about cork cambium is incorrect?
→
Consider the following statement about $PCR$

$I.$ Polymerase Chain Reaction $(PCR)$ is a technique of synthesizing multiple copies of the desired gene in vitro

$II.$ This technique was developed by Kary Mullis in $1985$

$III.$ A single $PCR$ amplification cycle involves three basic steps; denaturation, annealing and extension

Which of the statement given above are correct?

→
The protonema of moss differs from green alga in having
→
What initiation and termination factors are involved in transcription in Eukaryotes ?
→
How many organisms in the list given below show autrophic nutrition method? Lactobacillus, Nostoc, Chara, wolffia, Nistrosomonas, Nitrobacter, porphyra Streptococus, Saccharomyces, Trypanosoma,
→
The site for cellular respiration is
→
Given below are two statements :

Statement $I:$Mycoplasma can pass through less than 1 micron filter size.

Statement $II:$Mycoplasma are bacteria with cell wall

In the light of the above statements, choose the most appropriate answer from the options given below:

→
Statement I: Ligases are enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds.
Statement II: Ligases are enzymes catalysing the linking together of two compounds.
→
Statement I: Many citrus and mango varieties shows polyembryony.
Statement II: Some of the nucellar cells surrounding the embryo sac are developed into the embryos.
→
Leafy or vegetative bract is characteristics of the flower of
→