Draw labelled diagrams of the following:

i) Androecium of Pisum sativum showing (9+1) arrangement of stamens.

ii) L. S. of apple fruit.

iii) Cross section of coffee berry showing its component parts.

iv) A diagrammatic representation of collenchyma cells.

v) Megasporophyll of Cycas revoluta

Give the botanical names of the following :

i) Clove

ii) Papaya

iii) Soybean

iv) Sweet potato

v) Cashewnut

a) Match the items in column A with those of column B.

Write detailed answers to the following questions.

i) Discuss the range of forms found in fungi. Also describe their general morphological features and habitats

ii) Draw labelled diagrams of L.S. of sporophytes of Riccia and Sphagnum and compare their structures

Discuss the concept of alternation of generation in Fungi With the help of a suitable example.

Explain the basic types of life cycles in Algae by giving examples and labelled diagrams.

With clear and labelled diagrams depict the following:

i) Morphological structure of a thallus of Fucus

ii) Cross section of an apothecium

iii) Vertical transverse section of a thallus of Anthoceros showing mucilage canals

iv) A portion of t.s. of internode of an aerial fertile branch of Equisetum

Why are the bryophytes considered as the amphibians of the plant kingdom?

Can life exist at temperature more than 100ºC? If so, provide some examples.

Why are the cyanobacteria of great evolutionary interest?

Explain the ecological role of bryophytes as pioneers of vegetation and in inhibiting soil erosion

Prepare a detailed account on heterospory under the headings – definition, two examples, incipient heterospory, biological significance, and evolution of seed habit.

Elaters

Anabaena - Azolla association

Calyptra

Carinal canals

Clamp connection

Mention the features common between the bryophytes and the pteridophytes.

Mention the features common between the bryophytes and the pteridophytes.