Home
Class 12
BIOLOGY
Which of the following statements is inc...

Which of the following statements is incorrect ?
I. Each Malpighian tubule in cockroach is lined by glandular and ciliated cells.
II. Most of the species of cockroach are of no economical importance.
III. Fat bodies in cockroach play an important role in reproduction.
IV. The cockroach is ammonotelic in the rainy season.

A

I, III

B

I, III, IV

C

III, IV

D

II, IV

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement about cockroaches is incorrect, let's analyze each statement one by one: **Step 1: Analyze Statement I** - Statement I claims that "Each Malpighian tubule in cockroach is lined by glandular and ciliated cells." - In cockroaches, Malpighian tubules are indeed lined with glandular cells that help in the excretion of nitrogenous waste. However, they do not have ciliated cells. Therefore, this statement is **incorrect**. **Step 2: Analyze Statement II** - Statement II states that "Most of the species of cockroach are of no economical importance." - This statement is generally true. While some species may have ecological roles, most cockroach species do not have significant economic importance. Thus, this statement is **correct**. **Step 3: Analyze Statement III** - Statement III claims that "Fat bodies in cockroach play an important role in reproduction." - Fat bodies in cockroaches primarily serve as energy reserves, storing glycogen, and are not directly involved in reproduction. Therefore, this statement is **incorrect**. **Step 4: Analyze Statement IV** - Statement IV states that "The cockroach is ammonotelic in the rainy season." - Cockroaches are primarily uricotelic, meaning they excrete nitrogenous waste as uric acid, not ammonia. This statement is also **incorrect**. **Conclusion:** - The statements that are incorrect are I, III, and IV. However, since the question asks for one incorrect statement, the first incorrect statement identified is Statement I. **Final Answer:** The incorrect statement is: **I. Each Malpighian tubule in cockroach is lined by glandular and ciliated cells.** ---
Promotional Banner

Similar Questions

Explore conceptually related problems

In Cockroach wall of each malpighian tubule is lined by …........and …........cells.

Read the given paragraph It is lined by glandular and ciliated cells. It absorbs nitrogenous waste products from haemocoel and covert them into uric acid which is excreted out through the hindout Which of the following structures of cockroach is referred here ?

Which of the following statement is/are incorrect about lymph ? (i) Lymph is colourful as it has haemoglobin but no RBC (ii) It contains specialised lymphocytes which are responsible for immunity of the body (iii) Lymph is an important carrier for nutrients and harmones (iv) Fats are absorbed through lymph in the lacteals present in the intestinal villi.

Which of the following statement(s) is/are incorrect regarding S_N 1 reaction? I) Rearrangement is possible. II) Proceeds with complete inversion of configuration. III) Rate depends on polarity of solvent. IV) The strength of the nucleophile is important in rate determining step.

Assertion : Excretion in cockroach occurs by Malpighian tubules Reason : Each Malpighian tubule is lined by non-ciliated columnar cells.

Given below are four statements (i)-(iv). Which two of the following statements are correct ? (i) It is estimated that more than 70 percent of the world livestock population is in India and China. (ii) Stringent cleanliness and hygiene (both of the cattle and the handless) are of paramount importance while milking, storage and transport of the milk and products. (iii) Out-breeding is the breeding between animals of the same breed only. (iv) Corsses between different breeds is called inbreeding.

Read the statements given below. Which of the following statements is / are incorrect ? I. Amniocentesis , a procedure which involves the analysis of yolk cells , has been banned by the government to prevent female foeticide. II. The oral contraceptives pill ' saheli ' was developed by the central During Research Institute ( CDRI ) situated in the city of Ludhiana . III. Spermicidal Creams , jellies , and foams are usually used with natural methods of contraception to increase their efficiency . IV . Progesterone or progesterone - estrogen combination can also be used as implants under the skin for contraception purpose .

Which of the following statements are incorrect ? (i) Leucocytes disintegrate in spleen and liver (ii) RBCs, WBCs and blood platelets are produced by bone narrow (iii) Neutrophils bring about destruction and detoxification of toxins of proteins origin (iv) Important function of lymphocytes is to produce antibodies.

Which of the following statements are incorrect about chylomicrons? (i) Chylomicrons are produced in the epithelial cells of small intestine. (ii) It contains trigycerides, cholesterol and phospholipids. (iii) They are protein coated small vesicles. (iv) Chylomicrons are released from the epithelial cell into lacteals

Which of the following statements is/are incorrect regarding the collecting duct? (i). It extends from the cortex to medulla. (ii). Large amount of water could be reabsorbed by it to produce concentrated urine. (iii). Small amount of urea diffuses into it from the medulla to keep up the osmolarity. (iv). it plays a role in maintaining pH and ionic balance of blood by the selective secretion of H^(+) and K^(+) ions.