MCQ
The cells without nuclei are present in
  • A
    Vascular cambium
  • B
    Root hair
  • C
    Companion cell
  • Members of sieve tube

Answer

Correct option: D.
Members of sieve tube
d
The cells of sieve tube do not possess nuclei.

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

Similar questions

Which of the following mechanism of mosses is more elaborate?
How many nuclei are present in embryo sac after fertilization ?
Zygospore is
The Indian wild ass is in the category of ..... by Wildlife Protection Act of government of India
One of the major components of cell wall of most fungi is
Phytohormones are
Amyloplast is
Classification of organisms on the basis of fossils record that play important role in elucidation of evolutionary relationships is
Which of the following statement(s) is/are correct?

$(i)$ Reproduction in fungi can take place by vegetative means - fragmentation and budding.

$(ii)$ Fusion of two nuclei is called plasmogamy.

$(iii)$ Fusion of protoplasms between two motile or nonmotile gametes is called karyogamy.

$(iv)$ Meiosis in zygote results in diploid spores.

Which one of the following statements are correct ?
(i) The process through which ATP is synthesized by cells is named as phosphorylation.
(ii) When the two photosystem work in a series, first PS-I and then PS-II, a process called non - cyclic photo phosphorylation occurs.
(iii) The membrane or lamellae of the grana have both PS-I and PS-II and the stroma lamellae membrane lack PSII as well as NADP reductase enzyme.
(iv) Cyclic photophosphorylation occur when light of wavelength beyond 700 nm are available for excitation.
(v) ATP synthesis is linked to development of a proton gradient across a membrane.
(vi) In respiration, protons accumulate in the intermembrane space of mitochondria when electrons move through the ETS.
(vii) The NADPH reductase enzyme is located on the stroma side of the membrane.
(viii) Within the chloroplast, protons in the lumen decreases in number, while in the stroma there is accumulation of protons.
(ix) The ATPase enzyme consists of two part: one called the $F _0$ is embedded in the membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane. The other portion is called $F_1$ and protrudes on the inner surface of the thylakoid membrane.
Choose the correct option given below :-