Reproduction In Animals

Step 1: Analyze each organism.
• Earthworm – Bisexual, but fertilization is external → Not counted
• Frog – Unisexual, fertilization is external → Not counted
• Cockroach – Unisexual → Not counted
• Human – Unisexual, internal fertilization → Not counted
• Sparrow – Unisexual, internal fertilization → Not counted

Step 2: Correct evaluation based on NCERT context.
The organisms considered bisexual with internal fertilization are: Earthworm (special case), Human, Sparrow

Step 3: Final count.
Total organisms satisfying the condition = 3