Which one of the following shows isogamy with non-flagellated gametes?

• Sargassum

• Ectocarpus

• Ulothrix

• Ulothrix

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

• vexillary

• imbricate

• twisted

• twisted

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structure will you use to distinguish between the two?

• Secondary xylem

• Secondary phloem

• Protoxylem

• Protoxylem

44.

In which one of the following processes CO₂ is not released?

• Aerobic respiration in plants

• Aerobic respiration in animals

• Alcoholic fermentation

• Alcoholic fermentation

Which one of the following fungi contains hallucinogens?

• Morchella esculenta

• Amanita muscaria

• Neurospora sp.

• Neurospora sp.

Which one of the following is wrong about Chara?

• upper oogonium and lower round antheridium

• Globule and nucule present on the same plant

• Upper antheridium and lower oogonium

• Upper antheridium and lower oogonium

Placenta and pericarp are both edible portions in 

• apple 

• banana

• tomato

• tomato

Which of the following statements is correct?

• The seed in grasses is not endospermic

• Mango is a parthenocarpic fruit

• A proteinaceous aleurone layer is present in maize grain

• A proteinaceous aleurone layer is present in maize grain

The osmotic expansion of a cell kept in water is chiefly regulated by

• mitochondria

• vacuoles

• plastids 

• plastids 

Deficiency symptoms of nitrogen and potassium are visible first in

• senescent leaves

• young leaves

• roots

• roots