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Draw and identify different elements of phloem.

Important Questions on Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.

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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Excretory organs present in annelids
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Muscles contain special protein called 
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Which of the following tissue gives tensile strength against bending and swaying
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Nasal tracts are lined by 
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Sclerenchyma in plants is an example of simple permanent tissue that is comprised of two types of cells, sclereids and fibres. Why these cells are functionally important to the plants even after they die? Choose the correct alternative from the options given below.
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
In animals, control and co-ordination are provided by which tissues?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
The tissues that help in the movement of body are
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Name the structures that help in excretion in tapeworm, earthworm, cockroach and human beings.
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.

Observe the given diagram and read the following statements.

Question Image

(i) These are cells of collenchyma tissue.

(ii) At maturity these cells lose their nucleus and cytoplasm.

(iii) The cells are living and thick at their corners.

(iv) This tissue gives flexibility to plant parts.

Correct statements are:

EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
T-lymphocytes originate from
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Define excretion.
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Choose the incorrect statements among the following.
A) The female sex organs of Angiosperms are called strobilus.
B) The fusion of motile male gamete with non-motile egg is called zooidogamy.
C) Some algae are in association with animals.
D) Archegonium is flank shaped male sex organ with single cell.
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.

Give appropriate biological or technical terms for the following:

The relaxation phase of the heart.

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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
_____ is not an example of simple tissues.
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
What is excretion? Name two excretory organs in humans.
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Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Explain the Haversian system of bone tissue.
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
What is excretion? Name any two nitrogenous wastes products.
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Which of the following plant tip has quiescent centre
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Parenchyma, collenchyma and sclerenchyma are kinds of simple permanent tissues in plants. Which of the following statement is true for collenchyma?
A. Made up of dead cells
B. Have very little intercellular space
C. Cells are irregularly thickened at the corners
D. Cell wall contains lignin
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.>Structure and Function - In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
The xylem in plants are responsible for