carthamus tinctorius belongs to family

• Asteraceae

• Solanaceae

• Malvaceae

• Fabaceae

In oogamy, fertilization involves :

• a small non- motile female gamete and a large motile male gamete

• a large motile female gamete and a small non-motile male gamete

• a large non- motile female gamete and a small motile male gamete

• a large non-motile female gamete and a small non-motile male gamete

In angiosperms, triple fusion results in the formation of:

• zygotic nucleus

• polar nucleus

• secondary nucleus

• primary endosperm nucleus

174.

Seed habit originated in

• Bryophyta

• Pteridophyta

• Gymnosperms

• Angiosperms

Read the following statements (IV) and answer the question which follows them

I. In liverworts, mosses and ferns gametophytes are free living.

II. Gymnosperms and some ferns are heterospores.

III. Sexual reproduction in Fucus, Volvox and Albugo is oogamous.

IV. The sporophyte in liverworts is more elaborate than that in mosses.

How many of the above statements are correct?

• One

• Two

• Three

• Four

The most common type of ovule found in angiosperms is

• Anatropous ovule

• Atropous ovule

• Campylotropous ovule

• Hemitropous ovule

Choose the option representing the incorrect match of different feature of major classes of algae.

• Class	Cell wall	Dominant pigment
  Chlorophyceae	Cellulose + pectic material	Chl a and b, $\mathrm{\alpha }$ and $\mathrm{\beta }$ carotene

• Phaeophyceae

  Silica + pectic material

  Chl a and c, $\mathrm{\beta }$ carotene

• Rhodophyceae

  Pectic material + cellulose

  Chl a and d, carotene

• Cyanophyceae

  Mucopeptide + Mumaric acid

  Chl a, $\mathrm{\beta }$ carotene

Select the mismatch

• Algae	Thallus
  Chalamydomonas	Unicellular flagellate

• Chlorella

  Unicellular non flagellate

• Ulva	Parenchymatous

• Volvox

  Non- flagellate colonies

What did Engelmann observe from his prism experiments?

• Bacteria could not detect the sites of O₂ evolution.

• Bacteria release excess carbon dioxide in red and blue light

• Bacteria accumulated due to the increase in temperature caused by increase in oxygen concentration

• Bacteria get accumulated towards red and blue light

Which of the following has the largest number of chomosomes?

• Haplopappus gracilis

• Gaint redwood tree

• Pisum sativum

• Ophioglossum reticulatum