Spore Formation_Unsolved Paper
Chapter: How Do Organisms Reproduce | Topic: Spore Formation
SPORE FORMATION_UNSOLVED PAPER
Topic: Spore Formation
Q1. Spore formation is a type of:
- Sexual reproduction
- Asexual reproduction
- Binary fertilisation
- Vegetative reproduction in animals
Q2.Which organism is commonly used as an example of reproduction by spore formation in Class 10 Biology?
- Amoeba
- Hydra
- Rhizopus
- Paramecium
Q3.In Rhizopus, spores are produced inside a structure called the:
- Bud
- Sporangium
- Pseudopodium
- Fragment
Q4.Which structure of Rhizopus helps in the formation and release of spores?
- Sporangium
- Root hair
- Leaf
- Flower
Q5.Which feature of spores helps them survive unfavourable environmental conditions?
- They are always actively moving
- They can remain protected until favourable conditions return
- They require immediate fertilisation
- They contain chlorophyll
Q6.Under favourable conditions, a spore can:
- Develop into a new organism
- Become a seed immediately
- Fuse with a flower
- Produce only a leaf without further development
Short questions
Q1. What is spore formation? Why is it considered a method of asexual reproduction?
Q2.Name the organism commonly studied in Class 10 Biology as an example of spore formation. Name the structure in which its spores are produced.
Q3.What is the function of the sporangium in Rhizopus?
Q4.Why are spores generally produced in large numbers? How can this benefit an organism?
Q5.You may have noticed a cottony growth appearing on stale bread kept in a warm and moist place.
What organism may be responsible for this growth, and how can spore formation help it spread?
Q6.A student keeps a piece of moist bread in a closed container for several days and notices tiny black structures appearing on the fungal growth.
What could these structures represent? State their importance in the life cycle of the organism
Q1. Describe the process of spore formation in Rhizopus. Include the role of the sporangium and explain what happens to the spores when suitable conditions become available.
Q2.Explain the important features of spores that make spore formation an effective method of asexual reproduction. Discuss their number, dispersal, protection, and ability to develop under favourable conditions.
Q3.Describe the structure of Rhizopus relevant to spore formation. Explain the role of the fungal body, upright structures, and sporangia in the reproductive process.
Q1. A piece of bread is left in a warm, moist kitchen for several days. A black, powdery growth appears on its surface.
a) Which reproductive structure of a fungus might be responsible for the black powdery appearance?
b) How could these structures help the fungus reproduce?
Q2. A fungal organism produces a large number of spores before the surrounding conditions become dry and unsuitable for growth.
a) Why could producing spores be advantageous in such conditions?
b) What may happen to the spores when favourable conditions return?
Q3. Two fungal colonies are observed:
Colony A: Produces many small reproductive structures that can be dispersed through the surroundings.
Colony B: Produces only a few reproductive structures that remain close to the parent organism.
Compare the likely ability of the two colonies to spread to new locations. Give a biological reason for your comparison.