Biology
The figure shown alongside represents an organism. Study the figure and answer the following questions.
(a) Identify the organism and write its common as well as scientific name.
(b) Label the parts shown as 1, 2 and 3.
(c) Name two suitable habitats of the organism shown.
(d) Mention its main mode of reproduction.
(e) What specific kinds of digestion occur in it ?
Answer
(a) The organism show in figure is bread mould.
Common Name — Moulds
Scientific Name — Rhizopus
(b) The parts are:
- 1 → Sporangium
- 2 → Spores
- 3 → Hyphae
(c) They prefer warm and humid climate and organic material like fruits, bread, leather etc. to grow.
(d) It shows asexual reproduction as well as sexual reproduction. Asexually it reproduces by spore formation. A few hyphae become erect (sporangiophores) and swell at the tip to form sporangium. The sporangium containing spores burst to spread the spores. The spore germinates to form hyphae when it finds favorable conditions.
(e) Extracellular digestion.
Related Questions
If you leave a piece of moist bread covered under a small bell jar at a warm place, mould grows on it in a few days. Answer the following with reference to this observation:
(a) What would happen if the bread was not covered by the bell-jar?
(b) What would happen if moist bread was placed in a refrigerator?
(c) What appears first on the bread – the mycelia or the spores?
Draw a neat diagram of the unicellular fungus 'Yeast' and label its six important parts.