Select the wrong statement.

• Isogametes are similar in structure, function and behaviour

• Anisogametes differ either in structure, function and behaviour

• In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile

• Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy

Which one of the following is not a correct statement?

• Herbarium houses dried, pressed and preserved plant specimens

• Botanical gardens have collection of living plants for reference

• A museum has collection of photographs of plants and animals

• Key is a taxonomic aid for identification of specimens

lsogamous condition with non-flagellated gametes is found in

• Chlamydomonas

• Spirogyra

• Volvox

• Fucus

Besides paddy fields, cyanobacteria are also found inside vegetative part of

• Pinus

• Cycas

• Equisetum

• Psilotum

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

6.

Among bitter gourd, mustard, brinjal, pumpkin, China rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, Petunia, tomato, rose, Withania, potato, onion, aloe and tulip, how many plants have hypogynous flower?

• Six

• Ten

• Fifteen

• Eighteen

Interfascicular cambium develops from the cells of

• medullary rays

• xylem parenchyma

• endodermis

• pericycle

In China rose the flowers are

• actinomorphic, hypogynous with twisted aestivation

• actinomorphic, epigynous with valvate aestivation

• zygomorphic, hypogynous with imbricate aestivation

• zygomorphic, epigynous with twisted aestivation

Lenticels are involved in

• transpiration

• gaseous exchange

• food transport

• photosynthesis

Age of a tree can be estimated by

• its height and girth

• biomass

• number of annual rings

• diameter of its heartwood