PTERIDOPHYTES

Question 1

WHAT ARE THE MAIN CHARECTERISTICS OF PTERIDOPHYTES ?

Answer 1

• TRCHEOPHYTIC
• ARCHAEGONIATE
• EMBRYOPHYTES WITHOUT SEEDS

Question 2

FROM WHERE IS THE NAME DERIVED FROM ?

Answer 2

FEATHER LIKE NATURE OF LEAVES OF FERNS WHICH ARE PINNATE COMPOUND

Question 3

WHO IS THE FATHER OF PTERIDOLOGY ?

Answer 3

HAECKEL

Question 4

WHAT ARE THE 1ST PLANTS WITH VASCULAR TISSUES AND WHAT ARE ITS OTHER NAMES ?

Answer 4

PTERIDOPHYTES OTHER NAMES ARE BOTANICAL SNAKES OR VASCULAR CRYPTOGAMS

Question 5

WHERE DO THEY LIVE ?

Answer 5

MOSTLY TERRESTRIAL - MOIST SHADY PLACES - SOME AQUATIC

Question 6

NAME ANY FEW EX. FOR PTERIDOPHYTES ?

Answer 6

• AZOLLA
• SALVINIA
• MARSELIA

Question 7

WHAT IS THE MOST DOMINANT LIFE CYCLE AND DESCRIBE IT ?

Answer 7

SPOROPHYTE - INDEPENDENT, HERBACEOUS - RARELY WITH TREE HABITAT - DIFFERENTIATED INTO ROOT STEM & LEAF

Question 8

WHAT IS THE TYPE OF ROOT SYSTEM ?

Answer 8

ADVENTITIOUS

Question 9

HOW CAN THE STEM BE ?

Answer 9

AERIAL OR UNDERGROUNG ( RHIZOME )

Question 10

DESCRIBE AERIAL STEM ?

Answer 10

CAN BE ERECT OR PROSTRATE - SHOWES DICHOTOMOUS OR MONOPODIAL BRANCHING

Question 11

DESCRIBE LEAVES.

Answer 11

CAN BE OF 2 TYPES :-
* MICROPHYLLOUS
* MACROPHYLLOUS

Question 12

EXPLAIN MICROPHYLLOUS AND GIVE EX. ?

Answer 12

THE LEAF TRACE DOES NOT DISTRUB THE VASCULAR CYLINDRICAL OF THE STEM
EX :-
LYCOPODIUM, SELAGINELLA, EQUISETUM

Question 13

EXPLAIN MACROPHYLLOUS AND GIVE EX. ?

Answer 13

THE LEAF TRACE PRODUCES PARENCHYMATOUS LEAF GAP IN VASCULAR CYLINDRICAL OF THE STEM
EX:-
FERNS

Question 14

ARE VASCULAR TISSUES PRESENT ?

Answer 14

IN ALL ORGANS

Question 15

WHAT TYPE OF STELE IS PRESENT ?

Answer 15

PROTOSTELE
SIPHONOSTELE
DICTYOSTELE

Question 16

XYLEM ONLY HAS TRACHEIDS BUT VESSELS ARE SEEN IN ?

Answer 16

SELAGINELLA
EQUISETUM
MARSELIA

Question 17

PHLOEM HAS SIEVE CELLS BUT DOES NOT HAVE

Answer 17

COMPANION CELLS

Question 18

SECONDARY OUT GROWTH IS PRESENT / ABSENT BUT SEEN IN __________

Answer 18

PRESENT - ISOETES

Question 19

SPROPHYLLS MAY BE SCATTEREDAS IN ______________

Answer 19

DRYOPTERIS

Question 20

SPOROPHYLLS MAY BE GROUPED TO FORM ____________ OR ________________ AS IN _____________ &____________ &________

Answer 20

STROBILI - CONES - SELAGINELLA, EQUISETUM, LYCOPODIUM

Question 21

IN LYCOPODIUM & SELAGINELLA SPORANGIUM DEVELOPS

Answer 21

SINGLY ON ADAXIAL SUFACE OF THE SPOROPHYLL

Question 22

IN FERNS SPORANGIUM AGGREGATES

Answer 22

IN CLUSTES FORMING SORI ON ABAXIAL SIDE

Question 23

IN FERNS SORI IS PROTECTED BY

Answer 23

TRUE INDUSIUM ( DRYOPTERIS )
FALSE INDUSIUM ( PTERIS )

Question 24

DEVELOPMENT OF SPORANGIUM MAY BE

Answer 24

• EUSPORANGIATE( PSILOTUM, SELAGINELLA )
• LEPTOSPORANGIATE ( SALVINIA, MARSELIA, DRYOPTERIS, AZOLLA )

Question 25

IN SPORANGIUM SPORE MOTHER CELLS FORM

Answer 25

UPON MEOSIS

Question 26

HAPLOID MEOTIC SPORES GERMINATE AND FORM

Answer 26

REDUCED MULTICELLULAR PROTHALLI ( GAMETOPHYTE )

Question 27

PROTHALLI HAS

Answer 27

FEMALE SX ORGAN : ARCHEGONIA MALE SEX ORGAN : ANTHERIDIA

Question 28

GAMETOPHYTES REQUIRE WHAT TEMP. FOR GROWTH

Answer 28

COOL, DAMP AND SHADY PLACES

Question 29

PTERIDOPHYTES GROWTH IS RETRICTED IN

Answer 29

NARROW GEOGRAPHICAL REGIONS

Question 30

WHAT ARE THE TYPES OF SPORES PRODUCED ?

Answer 30

HOMOSPORES & 2 HETEROSPORES ( MACRO & MICRO SPORES )

Question 31

DEFINE AND GIVE EX. FOR HOMOSPORES

Answer 31

SAME KIND OF SPORES EX :- LYCOPODIUM, PTERIS * THEY GERMINATE AND FORM MONOCEOUS SPORES

Question 32

DEFINE AND GIVE EX. FOR HETERO SPORES

Answer 32

DIFF. SPORES EX:- SELAGINELLA, SALVINIA THE SPORES PRODUCED FORM DIOCEOUIES PLANT

Question 33

HOW ARE ANTHEREDIA ?

Answer 33

PROJECTED OR EMBEDDED WITHOUT STALK

Question 34

HOW MANY CELLS DOES THE JACKET HAVE ?

Answer 34

3 OR MORE CELLS

Question 35

WHAT HAPPENS WITHIN ANTHEREDIA ?

Answer 35

ANDROCYTES METAMORPHOSIZE TO FORM ANTHEROZOIDS

Question 36

HOW ARE MALE GAMETES ?

Answer 36

* BIFLGELATED ( SELAGINELLA, LYCOPODIUM ) * MULTICILIATED ( DRYOPTERIS, EQUISETUM )

Question 37

DESCRIBE STRUCTURE OF ARCHAEGONIUM ?

Answer 37

HAS VENTER AND PROJECTED NECK

Question 38

VENTER IS SURROUNDED BY ?

Answer 38

PROTHALLIAL CELLS

Question 39

VENTER HAS ?

Answer 39

AN EGG CELL , VENTRAL CANAL CELL

Question 40

NECK HAS ?

Answer 40

4 VERTICAL ROWS OF JACKET CELLS WITH EACH ROW HAVING DIFERENT NUMBER OF CELLS | NECK CELLS ARE 1 OR MANY

Question 41

ARCHAEGONIAL SECREATION HAS ?

Answer 41

MALIC ACID WHICH ATTRACTS AMLE GAMETES

Question 42

FERTILIZATION IS ?

Answer 42

OOGAMOUS INSIDE ARCHAEGONIAL VENTER

Question 43

YOUNG SPOROPHYTE DERIVES NOURISHMENT FROM ?

Answer 43

GAMETOPHYTE ONLY IN EARLY STAGES

Question 44

LIFE CYCLE IS

Answer 44

DIPLONTIC

Question 45

ALTERATION OF GENERATIONS IS

Answer 45

HETEROMORPHIC

Question 46

USES OF PTERIDOPHYTES ?

Answer 46

* MEDICINAL PURPOSES * SOIL BINDERS * GROWN AS ORNAMENTS

Question 47

NAME THE 4 CLASSES OF PTERIDOPHYTES AND GIVE THEIR EX. ?

Answer 47

* PSILOPSIDA:- PSILOTUM * LYCOPSIDA:-SELAGINELLA, LYCOPODIUM * SPHENOPSIDA:-EQUISETUM * PTEROPSIDA:-DRYOPTERIS, PTERIES, ADIANTUM