Biology Today - February 2018

1. Which of the following is true regarding birds?
   A. Skin dry without glands, except uropygial gland
   B. Long bones pneumatic
   C. Crop (modified expansion of oesophagus) for storage
   of food and gizzard for grinding of food, are two
   additional chambers in alimentary canal.
   D. Legs are covered by scales.
   E. Air sacs connected with lungs to supplement respiration
   (a) All except ‘C’
   (b) All except ‘A’
   (c) All except ‘E’
   (d) All of these


2. The most unique feature of mammals are
   (a) mammary glands and hair
   (b) diaphragm and hair
   (c) ear pinna and coccygeal bone
   (d) all of these.


3. Amniotes comes under Class
   (a) Reptilia, Aves and Mammalia
   (b) Pisces, Aves and Mammalia
   (c) Cyclostomata, Reptilia and Mammalia
   (d) Pisces, Cyclostomata and Reptilia.


4. Which of the following is true for all chordates?
   (a) Notochord-mid-dorsal, solid, ectodermal and provide
   support
   (b) Dorsal hollow nerve cord-mid-dorsal between notochord
   and alimentary canal
   (c) Paired pharyngeal gill slits
   (d) All of these

SINGLE OPTION CORRECT

ANIMAL KINGDOM

PRACTICE PAPER

CLASS

XI

This paper contains 50 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE

is correct. (Mark only one choice).

Marks : 50 × 4 = 200 Negative Marking (–1)

Contributed by : +DUSDO6LQJK, Harpal's Biology Classes, Chandigarh, 09781124215

5. Which of the following statements is wrong?
   (a) All vertebrates are chordates.
   (b) Protochordates are exclusively marine and includes
   hemichordates, urochordates and cephalochordates.
   (c) Urochordates like +HUGPDQLD show retrogressive
   metamorphosis.
   (d) Excretory organ in $PSKLR[XV is flame cell.


6. Animal (shown in the diagram), has which of the following
   feature?
   (a) Marine, carrying notochord throughout
   life.
   (b) It has a dorsal heart, body covered
   by tunic.
   (c) Adult sedentary, larva motile and
   larva is ammocoete.
   (d) Notochord present in tail region of larva, only.


7. Which of the following statements is wrong?
   (a) Body of reptiles is covered by dry and cornified
   epidermal scutes.
   (b) &DORWHV is commonly called as tree lizard.
   (c) Birds are homeothermic with sound producing organ
   as syrinx.
   (d) Bat differs from bird by containing diaphragm and ear
   pinna.


8. Which of the following statements is true for shown animal?