MCQ
In Pinus / gymnosperms, the haploid structure are:
  • A
    Megaspore, endosperm and embryo.
  • B
    Megaspore, pollen grain and endosperm.
  • C
    Megaspore, integument and root.
  • D
    Pollen grain, leaf and root.

Answer

  1. Megaspore, pollen grain and endosperm.

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

The plasmid:
Tendrils exhibit/twining of tendrils is due to:
Xylem position in secondary xylem is
A specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about $0.1\; sec$. The delay allows.
Intrafascicular cambium is situated in
Which group is commonly called as 'sea stick'
Match the column $I$ and $II$
Column $I$ Column $II$
$(a)$ Apocarpous $(i)$ Papaver
$(b)$ Syncarpous $(ii)$ Michellia
$(c)$ Epiphyllous $(iii)$ Cashew
$(d)$ Cotyledon $(iv)$ Aloe
Cleavage of specific covalent bonds and removal of groups without hydrolysis is the property of:
What is not true about cell cycle?
$a$. During $G_1$ phase there is active synthesis of $RNA$ and proteins but no change in its $DNA$ content
$b$. In synthesis or $S$ phase, each chromosome carries a duplicate set of genes
$c$. During $G_2$ phase, a cell contains double the amount $(4C)$ of $DNA$ present in the original diploid cell $(2C)$
$d$. In $S$-phase a cell doubles the original diploid $(2n)$ chromosome number
Which of the following statement is/are correct regarding digestive system of cockroach?

$(i)$ Mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus.

$(ii)$ Gizzard helps in grinding the food particles.

$(iii)$ A ring of $6-8$ blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut, which secrete digestive juice.

$(iv)$ At the junction of midgut and hindgut is present another ring of $100-150$ yellow coloured thin filamentous malphigian tubules which help in removal of excretory products from haemolymph.