Annuals and Perennials

Q. Bamboo plants flower only once in their lifetime, generally after 50-100 years, produce a large number of fruits and die. Blue stretches were formed by flowering of the plant, Strobilanthus kunthiana, in Kerala, Karnataka and Tamil Nadu. It flowers once in how many years?

1. 15 years
2. 12 years
3. 20 years
4. 48 years

Q.

What is the Juvenile Phase in plants called?

Q.

Name one plant which flowers only once in its lifetime.

Q.

Some varieties of wheat are known as spring wheat while others are called winter wheat. Former variety is sown and planted in spring and is harvested by the end of the same reason. However, winter varieties, if planted in spring, fail to flower or produce mature grains within a span of a flowering season. Explain, why?

Q.

The mass flowering of this plant transformed hilly areas in Kerala, Karnataka and Tamilnadu into blue stretches and attracted a large number of tourists in the months of September and October 2006. Identify the plant.

1. Bamboo (Bambusa)

2. Century Plant(Agave americana)

3. Neelakurinji (Strobilanthes kunthiana)

4. Neel (Indigofera tinctoria)

Q.

Which one among the following is mismatched?

1. Seasonal fruits - Mango, Jackfruit, Apple

2. Annual plants - Wheat, Rice, Cucumber

3. Perennial plants - Maize, Cabbage, Marigold

4. Biennial plants - Carrot, Beet, Radish

Q. Who discovered Photoperiodism?

Q.

Which one of the following groups of plants do not show clear cut demarcation between three phases of life cycle?

1. Ephemerals

2. Annuals

3. Biennials

4. Perennials

Q. Perennial plant that shows flowering only once in its life time is

1. Only I
2. Only II
3. I and II
4. I, II

Q. Winter varieties of wheat, if planted in A would B mature grain within a span of flowering season.

1. A – Spring, B – Not Produce
2. A –Spring, B - Produce
3. A – Autumn, B - Produce
4. More than one option is correct

Q. You have obtained a high yielding variety of tomato. Name and explain the procedure that ensures retention of the desired characteristics repeatedly in large populations of future generations of the tomato crop. [2]

Q. The main difference between the biennials and perennial plants is that the perennials

1. Are tree species.
2. Do not die after seasonal production of fruits.
3. Invariably show asexual reproductive structure.
4. Always have underground perennating structure.

Q.

The mass flowering of this plant transformed hilly areas in Kerala, Karnataka and Tamilnadu into blue stretches and attracted a large number of tourists in the months of September and October 2006. Identify the plant.

1. Bamboo (Bambusa)

2. Century Plant(Agave americana)

3. Neelakurinji (Strobilanthes kunthiana)

4. Neel (Indigofera tinctoria)

Q. Which of the following flowers only once in its lifetime?

1. Mango
2. Jackfruit
3. Bamboo species
4. Papaya

Q.

Mention the unique feature with respect to flowering and fruiting in bamboo species.

Q. The tomato plants grow well under which of the following conditions of photo and nycto temperature?

1. hignd fluctuating respectiveh and low respectively
2. low and fluctuating respectively
3. fluctuating and low respectively
4. high aly

Q. The growth phase of an organism before attaining sexual maturity is referred to as

1. Juvenile phase
2. Both (a) and (b)
3. Vegetative phase
4. None of these

Q. Photoperiodism phenomena was first discovered by

1. Garnet and Allard
2. Haberlandt
3. Wickson and Thimann
4. Osborne

Q. One set of a plant was grown at 12 hours a day and 12 hours a night period cycles and it flowered. While in the other set, night phase was interrupted by flash of light and it did not flower. Under which one of the following categories will you place this plant?

1. Short-day
2. Long-day
3. Darkness-neutral
4. Day-neutral

Q.

Between annual and perennial plant, which one has a shorter juvenile phase?Give one reason.

Q.

both coconut palm and date palm produces staminate flowers.one is monoecious and other is dioecious. write the other difference?

Q.

Define the terms connected to plant kingdom.

1. Annual
2. Biennial
3. Perennial
4. Evergreen
5. Deciduous

Q. The development of different juvenile and adult foliage is called as

1. Heterophylly
2. Dedifferentiation
3. Hydrophily
4. Plasticity

Q.

Which one of the following groups of plants do not show clear cut demarcation between three phases of life cycle?

1. Ephemerals

2. Annuals

3. Biennials

4. Perennials

Q.

The mass flowering of this plant transformed hilly areas in Kerala, Karnataka and Tamilnadu into blue stretches and attracted a large number of tourists in the months of September and October 2006. Identify the plant.

1. Bamboo (Bambusa)

2. Century Plant(Agave americana)

3. Neelakurinji (Strobilanthes kunthiana)

4. Neel (Indigofera tinctoria)

Q. Which of the following flowers only once in its lifetime?

1. Jackfruit
2. Mango
3. Papaya
4. Bamboo

Q. Which of the following flowers only once in its lifetime?

1. Mango
2. Papaya
3. Jackfruit
4. Bamboo species