Archaebacteria differ from eubacteria in:

1.	Cell membrane structure	2.	Mode of nutrition
3.	Cell shape	4.	Mode of reproduction

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:

1. Vexillary

2. Imbricate

3. Twisted

4. Valvate

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?

Tracheids differ from the tracheary elements in:

1. Having casparian strips

2. Being imperforate

3. Lacking nucleus

4. Being lignified

Example of an edible underground stem is:

1. Carrot

2. Groundnut

3. Sweet potato 

4. Potato

Which of the following structures performs the function of mitochondria in a bacteria?