Locomotion and Movement — BIOLOGY STD 11 Science — Question

What are the effects of hypothyroidism (observed during pregnancy) on the development and maturation of a growing baby?

Differentiate between Aerobic respiration and fermentation

Mango and coconut are ‘drupe’ type of fruits. In mango fleshy mesocarp is edible. What is the edible part of coconut? What does milk of tender coconut represent?

Why is there no mixing of deoxygenated and oxygenated blood in the human heart normally?

Difference between Heartbeat and Pulse.

Write a brief account of mosses.

Explain the reasons of following.

1. Photosynthesis can occur in the absence of light.
2. Even non-green leaves can make the food.
3. Photosynthesis can occur under water.

Briefly give the contributions of the following scientists in formulating the cell theory Robert Virchow

Neha was walking in the garden early morning and observed many beautiful flowering plants. She got attracted by the brightly coloured flowers and their beautiful appearance. Neha was curious to know about the variation of colours in flowers and asked her biology teacher about this. Teacher told her about the plastids found in only plant cells.

1. Which plastids are found in flowers and fruits?
2. Which plastids are known as kitchen of the cell?
3. Name the colourless plastids.
4. What values are shown by Neha?

What is periderm? How does periderm formation take place in the dicot stems?