Who has opposable thumb

Options

A. Platypus
B. Kangaroo
C. Mole
D. Lemur.

Answer

To determine who has an opposable thumb among the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Opposable Thumb**:
- An opposable thumb is a thumb that can be positioned opposite to the other fingers, allowing for a better grip and manipulation of objects. This trait is common in primates.

2. **Analyze Each Option**:
- **Option 1: Platypus**:
- The platypus is a monotreme and does not possess an opposable thumb. It has webbed feet adapted for swimming, not for gripping.
- **Option 2: Kangaroo**:
- Kangaroos are marsupials and have paws that are not adapted for having an opposable thumb. They have strong hind limbs for jumping and do not have the thumb structure that allows for opposition.
- **Option 3: Marmoset**:
- Marmosets are small primates and do have opposable thumbs, which help them in gripping branches and manipulating objects. However, this option was incorrectly stated in the video as not having an opposable thumb.
- **Option 4: Lemur**:
- Lemurs are also primates and possess opposable thumbs, which are essential for their arboreal lifestyle, allowing them to grasp tree branches effectively.

3. **Conclusion**:
- After analyzing all the options, the correct answer is **Option 4: Lemur**, as it is the only one among the given choices that possesses an opposable thumb.

### Final Answer:
The organism that has an opposable thumb is **Lemur** (Option 4).

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