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What are the preventive measures for hepatitis B? [2 MARKS]

Areas with heavier rainfall will have more ___ (acidic/alkaline) soil.

Which of the following are not correctly stated about the corresponding soil formation?

1. Alluvial Soils: formed by the deposition of sediments by rivers.

2. Black Soils: derived from weathering of ancient metamorphic rocks of Deccan Plateau

3. Laterite Soils: formed as a result of the accumulation of organic matter derived from forest growth.

4. Mountain Soils: formed due to intense leaching and are well developed on the summits of hills and uplands.

Select the code

The most serious environmental effect posed by hazardous wastes is

Name the following:
(a) Free living Platyhelminthes;
(b) Scientific name of pork tape worm.

What is the approximate level of oestrogen in a contraceptive pill?

Take two beakers and name them A and B. Place some green gram seeds on moist cotton wool in each of two beakers. Keep beaker A in the refrigerator and beaker B in an ordinary room. What will you observe this process?

Most inspired particles such as dust fail to reach the lungs because of the ________.

Appu focused a section of leaf under the microscope and observed the following image. Statements below list characteristics of the labeled parts. Based on the statements choose the correct option.

Statement 1-(iii) helps to regulate transpiration.

Statement 2-(ii) allows only entry of water vapour.

Statement 3-(i) is essential for photosynthesis.

Statement 4-(iii) closes completely in the morning.

Match the correct option.

$\begin{array}{cc}i)Apicalmeristem& a)Helpstoincreasethelengthofthesteminbamboo\\ ii)Lateralmeristem& b)Helpstoincreasethelengthofrootandsteminbamboo.\\ iii)Intercalarymeristem& c)Helpstoincreasethegirthofthesteminmangotree.\end{array}$

Stress associated with long-term problems and beyond a person's control?

Identify the incorrect statement.

Cartilaginous fishes do not contain

In the process of respiration, glucose combines with oxygen in the cells of our body and a large amount of energy is__i__. Hence, respiration is an__ii__ process.

The information in which alternative completes the given statements?

The pair of muscles that have opposite actions or functions is ___.

The atlas and axis vertebrae are located in:

The malarial parasite 'Plasmodium' is carried only by female Anopheles mosquito and not by the male mosquito because:

Why do more complex organisms cannot give rise to new individuals through regeneration? [3 MARKS]

The product of Photosynthesis is transported from the source of production to the storage organs through

Question 4
Which of these options is not a function of Ribosome?

(i) It helps in the manufacture of protein molecules

(ii) It helps in the manufacture of enzymes

(iii) It helps in the manufacture of hormones

(iv) It helps in the manufacture of starch molecules

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (iv) and (i)

Buccal cavity, food pipe, stomach, small intestine, and large intestine are a part of ___.

In plant cell, cell wall is:

Which type of fertilisation is shown in the picture below?

___ closes the nasal cavity that opens to the pharynx.

Match the terminology with the correct description?

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Poultry feed has a higher level of:

What is common name of the following:
(a) Pleurobranchia and
(b) Cestum

What is the function of bile duct? [1 MARK]

Which one of the following is a mismatch?

Public Health Official: After several years of vaccinating all of the citizens of this state for Tacitus’ Disease, a highly infectious virus, state hospitals have cut costs by no longer administering this vaccine, starting at the beginning of this year. A state senator defended the position, arguing that after several years with zero incidence of the disease in the state, its citizens were no longer at risk. This is a flawed argument. Our state imports meats and produce from countries with high incidences of diseases for which our country has vaccines. Three years ago, when we reduced the use of the Salicetiococcus vaccines, a small outbreak of Salicetiococcus among young children, fortunately without fatalities, encouraged us to resume use at the previous vaccines.
The public health official’s statements, if true, best support which of the following as an inference?

The practice of growing two or more crops simultaneously in definite rows in the same field is called _________.

Give name of one improved crossbreed cows.

The clavicle meets scapula through (i)_______ and the scapula is attached to the upper arm through (ii)_______.

Name two types of complex tissues in plants.

What will happen if all the blood platelets are removed from the blood?

In the respiratory tract, the columnar epithelial tissue also has

Bicarpellary, syncarpous ovary with axile placentation is seen in the plants of family

Which is the cell that receives and transfers messages?

Intercalary meristem results in

Which of the following is a function of skin?

Immovable joints are called