Science — CBSE Class 10 board question

(i) Spore Formation in Rhizopus:

```
Diagram:
● Sporangium (spores inside) ← (a) Reproductive part
|
| Sporangiophore
|
─────────────────────────────── Mycelium (hyphae) ← (b) Non-reproductive part
|
Rhizoids
```

(a) Reproductive parts: Sporangium (containing spores)
(b) Non-reproductive parts: Mycelium (hyphae), rhizoids, sporangiophore

Rhizopus requires moisture to germinate and grow. A dry bread slice lacks the necessary moisture/water, so spores cannot germinate and Rhizopus cannot multiply on it.

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(ii) Budding in Hydra:

The process of reproduction in Hydra is called Budding.

In Hydra, a small outgrowth called a bud develops on the side of the parent's body. Cells divide rapidly at that spot, causing the bud to grow. The bud gradually develops a mouth and tentacles. Once fully formed, it detaches from the parent body and grows into a new, independent Hydra.

This is a type of asexual reproduction.

• The diagram must clearly label the sporangium (reproductive) and hyphae/mycelium (non-reproductive). Examiners award 1 mark for a neat, labelled diagram.
• The dry bread reason must mention lack of moisture — this is the key term.
• For Hydra: state the name budding, describe the outgrowth formation, development of tentacles, and separation — these are the scoring steps.
• "Asexual reproduction" at the end reinforces understanding and can fetch the clinching mark.