নিচের কোনটি ভিন্নবাসী উদ্ভিদ? Which of the following is a dioecious plant? (ক) লাউ (Bottle Gourd) (খ) পেঁপে (Papaya) (গ) কুমড়া (Pumpkin) (ঘ) সরিষা (Mustard)

The first question asks: "নিচের কোনটি ভিন্নবাসী উদ্ভিদ?" which translates to "Which of the following is a dioecious plant?"
The options are:
(ক) লাউ (Bottle Gourd)
(খ) পেঁপে (Papaya)
(গ) কুমড়া (Pumpkin)
(ঘ) সরিষা (Mustard)

A dioecious plant has male and female reproductive organs on separate individual plants.

• Bottle Gourd and Pumpkin are typically monoecious (male and female flowers on the same plant).
• Mustard has hermaphroditic flowers (both male and female parts in the same flower).
• Papaya is well-known for being dioecious, meaning individual plants are either male or female.

Therefore, the correct option is (খ) পেঁপে.

The answer to the first question is:
(খ) পেঁপে

The second question asks: "নিচের কোন জীবটি পচনে সাহায্য করে?" which translates to "Which of the following organisms helps in decomposition?"
The options provided are:
(ক) নিটাম (Gnetum)
(খ) প্যারামেসিয়াম (Paramecium)
(গ) প্লাজমোডিয়াম (Plasmodium)
(ঘ) The fourth option is not visible in the image.

Without the complete options, it is not possible to answer the second question accurately. Organisms that help in decomposition are typically bacteria and fungi.