Black rust of wheat is a fungal disease caused by

• Melampsora lini

• Claviceps Purpurea

• Albugo candida

• Puccinia graemzinis tritici

The real forces responsible for the movement of water from one cell to another cell is mainly

• Osmotic Pressure (OP)

• Turgor Pressure (TP)

• Diffusion Pressure Deficit (DPD)

• imbibition

The amphibians of plant kingdom are

• multicellular non motile algae

• bryophytes with simple internal organisation

• unicellular motile algae

• pteridophytes with complex internal organisation.

In Chlorophyceae the mode of sexual reproduction is

• anisogamy

• isogamy

• oogamy

• all of these

In which genera endospores are formed for reproduction

• Monococcus and Clostridium

• Bacillus and Clostridium

• Mucor and Bacillus

• None ofthe above

Agricultural chemicals include

• growth regulators

• fertilizers

• pesticides

• all of these

CO is harmful to human being because

• it decreases CO₂ concentration

• it competes O₂ to combine with haemoglobin

• it is carcinogenic

• it depletes O₂ layer

Which of the following is a day neutral plant

• Helianthus annuus

• Euphorbia pulcherrima

• Avena sativa

• Beta vulgaris

Which of the following is an antigibberellin

• Auxin

• Ethylene

• ABA

• Cytokinin

Heterospory is the production of

• sexual and asexual spores

• large and small spores

• haploid and diploid spores

• diploid and tetraploid spores