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

1. Sargassum

2. Ectocarpus

3. Ulothrix

4. Spirogyra

Five kingdom system of classification suggested by R.H. Whittaker is based on:

1. Complexity of body organisation

2. Mode of reproduction

3. Mode of nutrition

4. All of the above

Which one of the following fungi contains hallucinogens?

1. Morchella esculenta

2. Amanita muscaria

3. Neurospora sp.

4. Ustilago sp.

Archaebacteria differ from eubacteria in:

Which one of the following is wrong about Chara?

1. upper oogonium and lower round antheridium

2. Globule and nucule present on the same plant

3. Upper antheridium and lower oogonium

4. Globule is male reproductive structure

Which of the following is responsible for peat formation?

1. Marchantia

2. Riccia

3. Funaria

4. Sphagnum

Placenta and pericarp are both edible portions in:

1. Apple

2. Banana

3. Tomato

4. Potato

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

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

1. Secondary xylem

2. Secondary phloem

3. Protoxylem

4. Cortical cells

Which one of the following statements is correct?