MCQ
Phylum that doesn't have a true coelom is:
  • A
    Platyhelminthes.
  • B
    Annelida.
  • C
    Echinoderms.
  • D
    Arthropoda.

Answer

  1. Platyhelminthes.

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

In Pteridophytes/ Dryopteris meiosis occurs at the time of
Match the following:

Column $-I$

Column $-II$

Column $-III$

$X.$ $RBC$

$P.$ Nucleated

$A.$ $5-5.5$ Million

$Y.$ Monocytes

$Q.$ granulocyte

$B.$ $2-3\%$

$Z.$ Eosinophil

$R.$ Lack of nucleus

$C.$ $6-8\%$

 

$S.$ Lack of $Hb$

$D.$ $20-25\%$

Blood group $‘O’$ has
Pith in stem is derived from
Inflorescence is
The branches of the nodal tissue, which give rise to minute fibres throughout the ventricular musculature of the respective sides are called
Which of the following sentences are correct ?

$a -$ cell cycle can vary from organisation to organism and also from cell type to cell type.

$b -$ $DNA$ synthesis occurs only in pachytene.

$c-G_1$ phase corresponds to the interval between mitosis and initiation of $DNA $ reproduction.

 

Which one of the following forms the spindle apparatus during cell division
Identify the correct statements w.r.t. the given cell

$A$. Concerned with lipid and steroidal hormone synthesis

$B$. Outer non-living rigid structure which gives shape to the cell and protects from mechanical damage and infection.

$C$. Both lie perpendicular to each other and each has an organisation like the cart wheel.

$D$. Responsible for trapping light energy for the synthesis of sugar.

$E$. Present in cells actively involved in protein synthesis and secretion.

$F$. Spherical structures, rich in hydrolytic enzymes.

$T. O.$ Diener discovered a new infectious agent that was smaller than viruses and have the following characteristics.

$(i)$ It causes potato spindle tuber disease.

$(ii)$ It has free $RNA.$

$(iii)$ Molecular weight of $RNA$ is low. Identify the infections agent.