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Which of the following organelles does not have a membrane?

Tall plants with hard and thick brown stems are known as __.

Which of the following is a saprotroph?

Which among the following can lead to food spoilage?

A ____ is the point where two bones join together.

Smoking mainly damages which of the following organs?

The blood vessel which normally carries blood rich in carbon dioxide is known as___.

The part of neuron which encloses mitochondria and helps in maintainance of nerve cell is ____________.

Why is excretion required? Name the various parts of the excretory system of humans. Also, write the functions. [5 MARKS]

Animals living in polar regions are adapted to live in subzero climates. Which of the following set of adaptations would not be advantageous to survive in polar regions?

'Aerobic' means

Structures present in the small intestine that increase the surface area for absorption are termed ______.

Though margarine was introduced as a supposedly healthful alternative to butter, recent studies suggest it is as harmful or worse than butter.

Vesicles are essential for the normal functioning of the golgi apparatus because

A mouse is placed in an airtight jar and is kept in sunlight. How do you think the mouse can be helped to survive for a long time?

Which method of artificial vegetative propogation helps to combine traits of two different plants into one?

1. voluntary nervous system

What is the use of root hairs in the plant? Why do plants have root hairs?

Both glucose and alcohol are obtained from which of the following?

Human faeces are mostly composed of

Question 04(ii)

Fill up the blanks with the words given:
herbivore, plant, milk, sugarcane, carnivore
Deer eats only plant products and so, is called an ___

Which of the following is correct regarding the working of the lungs ?

Pick the types of simple tissues from the following.

Which structure in the leaves of plants is responsible for exchange of oxygen and carbon dioxide?

All changes in the weather are caused by

Option 1 :winds

Option 2 : rains

Option 3 :sun

Option 4:moon

In coconut, the seeds are dispersed by:

The above picture represents tropical rainforests in India (purple color). Which among the following regions is represented here?

The extension of the cyton of a neuron which carries electric impulses forward is ___________.

If Venus fly trap is insectivores plant and do not have chlorophyll so why it is green

Survival of plants in terrestrial environment has been made possible by the presence of:

Which of the following items can be included as agricultural waste?

Which of the following places had serious nuclear explosions and lead to the death of many people?

Distinguish between a parasite and a saprotroph. [3 MARKS]

Match the discoveries with the scientist who have made it
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{a.Anton Van Leeuwenhoek}& \text{i.All animals are made of cells}\\ \text{b. Robert Hooke}& \text{ii.Microscope}\\ \text{c.Theodor Schwann}& \text{iii. Cork has boxed structures}\\ \text{d. Matthias Schleiden}& \text{iv. All plants are made of cells}\end{array}$

Vaccination is the _______ way of giving protection against infections from a particular organism.

A group of cells forms a tissue based on:

Complete the following blanks, regarding lung volumes and capacities.
i. Functional lung capacity (FRC)$⟶$ ERV+RV= ________.
ii. Inspiratory capacity (IC)$⟶$ TV+IRV= ________.
iii. Vital capacity (VC)$⟶$ IC+ERV= ________.
iv. Total lung capacity $⟶$ RV+VC= ________.

Crop variety improvement aims to produce _______ .

The adrenal glands are located ________ .

The RBC count increases after an individual spends significant time at higher altitude because:

The tiny pores through which leaves take in carbon dioxide from the atmosphere are known as: